| Patent Number |
Title Of Patent |
Date Issued |
| 6762658 |
Dielectric resonator and dielectric filter |
July 13, 2004 |
| A dielectric resonator (10) having three surfaces formed by chamfering three ridged portions sharing an apex of a dielectric block and another three surfaces adjacent respectively thereto, in which each of the chamfered surfaces and the adjacent surfaces thereto offers an angle of 45 |
| 6712989 |
Composite magnetic body and electromagnetic interference suppressing body using the same |
March 30, 2004 |
| A composite magnetic body is obtained without the use of halogen-based or halogen-containing materials, such as, halogen-based binding agent of halogen-based resins or elastomers, and bromine-based fire retardents. The composite magnetic body (1) comprises a soft magnetic powder (2) and |
| 6620337 |
Composite magnetizer, composite magnetizer sheet, and methods of manufacturing the same |
September 16, 2003 |
| In a method of manufacturing a composite magnetizer, flat soft magnetic powder that strain is removed and magnetic coating of slurry regime consisting of a binder dissolved in a solvent are formed in a sheet by die-coating, gravure coating, or reverse coating. The binder includes a v |
| 6539097 |
Multi-functional vibration actuator |
March 25, 2003 |
| A multi-functional vibration actuator comprises a vibration transmitting portion (8) forming a peripheral portion thereof, a magnetic circuit formed by a yoke (1), a permanent magnet (2), and a plate (3), a vibrator member (5) arranged at a distance from one surface of the magnetic circu |
| 6538414 |
Electric energy storage device with cell energy control, and method of controlling cell energy |
March 25, 2003 |
| An energy adjusting device is provided which transfers energy charged in an arbitrary cell to the input/output terminals of a unit energy storage device. The energy adjusting device includes a transformer having a plurality of primary coils and a secondary coil mutually coupled magne |
| 6532824 |
Capacitive strain sensor and method for using the same |
March 18, 2003 |
| A capacitive strain sensor comprises a substrate (119) and a pair of interdigital electrode capacitors (209, 209A) formed on the substrate. A dielectric thick film (129) having a uniform thickness and made of a material the dielectric constant of which varies with strain is provided |
| 6529324 |
Optical component and method of manufacturing the same |
March 4, 2003 |
| In a method of manufacturing an optical component, long-shaped members 2e, 2f each for a polarizer, 3a for a Faraday rotator, 4a for a compensator are fixed on the substrate 1 by an epoxy adhesive to fabricate an interim article. The interim article is then adhered on a glass substrate 9 |
| 6515405 |
Mounting structure of piezoelectric transformer and method of mounting piezoelectric transformer |
February 4, 2003 |
| In a structure in which a piezoelectric transformer element (11) is mounted on a circuit board (27) equipped with a circuit component for driving the piezoelectric transformer element (11), at least one of a fixing member (33, 35) and a supporting member (37, 39, 41) made of an elastic m |
| 6480636 |
Optical isolator comprising a faraday rotator |
November 12, 2002 |
| An optical isolator comprises an optical element assembly (10) including a Faraday rotator (1) and a pair of polarizing elements (2) one of which is arranged on a light-input side of the Faraday rotator (1) to serve as a polarizer and other of which is arranged on a light-output side to |
| 6416830 |
Composite magnetic tube and method of producing the same, and electromagnetic interference suppr |
July 9, 2002 |
| A tube for externally covering or bundling electric cables is provided for suppressing radiation of undesired electromagnetic waves. The tube is made of a material in which soft magnetic powder is mixed with and dispersed into an organic binding agent. For protecting the cable from the u |
| 6392297 |
Electronic circuit element of conductor/insulator stacked type using high machinability substrat |
May 21, 2002 |
| An electronic component comprises an insulator substrate (11), a layered member composed of a plurality of insulator resin layers (12a-12f) and a plurality of conductor pattern layers (13a-13f) alternately stacked on the insulator substrate to form a first conductor line and a second con |
| 6388562 |
Contactless IC card communication system and related method |
May 14, 2002 |
| A reader/writer (RW) requires identification of anti-collision techniques used by IC cards (A, B, C, and D). The IC cards implement answers to the anti-collision technique identification requirement by the reader/writer at different timings respectively for respective IC cards among the |
| 6384799 |
Antenna having a helical antenna element extending along a cylindrical flexible substrate |
May 7, 2002 |
| In an antenna for use in a mobile communication apparatus and having a helical antenna element (40) of a helical shape, the helical antenna element is mounted on a flexible substrate (1) rounded to form a cylindrical shape. The helical antenna element has a plurality of oblique condu |
| 6377145 |
Vibration actuator having magnetic circuit elastically supported by a spiral damper with increas |
April 23, 2002 |
| A vibration actuator includes an electromechanical transducer having a magnetic circuit (1-4) and a driving coil (5), a support frame (9), and a damper (270) elastically supporting the magnetic circuit onto the support frame to flexibly damp the vibration of the magnetic circuit when a |
| 6376912 |
Common mode choke coil of the conductor/insulator stacked type that uses a high machinability su |
April 23, 2002 |
| An electronic component comprises an insulator substrate (11), a layered member composed of a plurality of insulator resin layers (12a-12f) and a plurality of conductor pattern layers (13a-13f) alternately stacked on the insulator substrate to form a first conductor line and a second con |
| 6369764 |
Extendible whip antenna assembly with a whip antenna having a notched stopper |
April 9, 2002 |
| An extendible whip antenna assembly (37) is provided with a combination of a helical antenna (39) mounted on an outer surface of a housing of a radio communication equipment, and a whip antenna (41). The whip antenna is movable between a retracted position in the housing and an extended |
| 6366084 |
Magnetic sensor having soft magnetic metallic element formed in zigzag shape |
April 2, 2002 |
| In a magnetic sensor having soft magnetic metallic elements disposed in opposite sides of a bridge circuit for sensing an external magnetic field by using a phenomenon where a skin depth of the soft magnetic metallic elements changes in dependence on a strength of the external magnetic |
| 6362434 |
Magnetic prepreg, its manufacturing method and printed wiring board employing the prepreg |
March 26, 2002 |
| For improving a noise characteristic of a printed circuit board excellent in noise characteristic, a magnetic prepreg formed by impregnating a magnetic paint composed of soft magnetic powder and thermosetting resin into a glass cloth is used as a prepreg constituting the printed circuit |
| 6348165 |
Semiconductor magneto-optical material |
February 19, 2002 |
| A semiconductor magneto-optical material includes a semiconductor dispersed with fine magnetic material particles and is characterized by exibiting magneto-optical optical effect at ordinary room temperature. |
| 6310285 |
EMI preventive part and active device with the same |
October 30, 2001 |
| An EMI countermeasure component is provided relative to an active element, which does not deteriorate a circuit function of the active element, but has a sufficient shielding effect against permeation of electromagnetic waves radiated to the exterior, and further suppresses a malfunction |
| 6278227 |
Piezoelectric transformer |
August 21, 2001 |
| A piezoelectric transformer (21) comprises a piezoelectric rectangular body (23) equally divided into first to fourth regions (A1, A2, A3, and A4) in a longitudinal direction. The first and the fourth regions (A1, A4) are provided with plane electrodes (24, 25, 26, and 27) as input elect |
| 6266018 |
Antenna assembly and a mobile radio apparatus using the same |
July 24, 2001 |
| An antenna assembly (35) mounted to a mobile communication set by a holder (61) to be retractable therein and extendable therefrom comprises a whip antenna (51) having a contact (57) and a helical antenna (43) joined with each other through an insulator joint member (39). The holder (61) |
| 6255813 |
Magnetic sensor comprising a soft magnetic thin film element |
July 3, 2001 |
| A magnetic sensor (31) comprises an insulator substrate (37) having first and second surfaces opposite to each other, a soft magnetic element having first and second ends opposite to each other and mounted on the first surface of the insulator substrate, and a conductor mounted on the se |
| 6198448 |
Lightweight antenna assembly comprising a whip antenna and a helical antenna mounted on a top en |
March 6, 2001 |
| In an antenna assembly (10) including a whip antenna (1, 9) provided with a stopper (5) of a conductive material at a lower end of the whip antenna, a helical antenna (2) provided with a conductive sleeve (6) mounted on a top end of the whip antenna, and a holder (4) of a conductive mate |
| 6191755 |
Two-resonance helical antenna capable of suppressing fluctuation in electrical characteristic wi |
February 20, 2001 |
| In a two-resonance helical antenna, a single helical coil (3) is made of a conductive material and extends in one axis direction. An annular conductor portion (5) is arranged around the helical coil in a coaxial fashion to be spaced and insulated from the helical coil. The annular co |
| 6187120 |
Method of manufacturing composite magnetic sheet |
February 13, 2001 |
| A mixture of flat soft magnetic powder and an organic binding agent is rolled by mutually confronting of rolls so as to produce a composite magnetic sheet excellent in electromagnetic wave absorption characteristic. A plurality of the composite magnetic sheets are stacked by forming |
| 6181130 |
Magnetic sensor having excitation coil including thin-film linear conductor sections formed on b |
January 30, 2001 |
| A magnetic sensor includes a bobbin having one surface provided with a toroidal groove, and a toroidal inductor accommodated in the groove. The toroidal inductor has a toroidal core and an excitation coil wound on the toroidal core. The excitation coil has a conductive pattern of a plura |
| 6163300 |
Multi-band antenna suitable for use in a mobile radio device |
December 19, 2000 |
| In a multi-band antenna (10) being provided with an antenna element having an LC parallel resonance circuit (3) and a first and a second radiation element (1,2) connected to opposite ends of the LC parallel resonance circuit, the LC parallel resonance circuit is constituted by self-r |
| 6138510 |
Piezoelectric vibratory gyroscope utilizing an energy-trapping vibration mode |
October 31, 2000 |
| A piezoelectric vibratory gyroscope utilizing an energy-trapping vibration mode comprises a piezo-electric plate having a principal surface and polarized in a thickness direction, and first through n-th electrodes (n being an integer not smaller than three) formed in a generally central |
| 6132524 |
Semiconductor magneto-optical material |
October 17, 2000 |
| A semiconductor magneto-optical material includes a semiconductor dispersed with fine magnetic material particles and is characterized by exhibiting magneto-optical effect at ordinary room temperature. |
| 6118221 |
Cold-cathode tube lighting circuit with protection circuit for piezoelectric transformer |
September 12, 2000 |
| To provide a cold-cathode tube lighting circuit which quickly and smoothly carries out lighting of a cold-cathode tube and prevents damage of a piezoelectric transformer as an inverter transform in the lighting circuit, the lighting circuit is provided with a protection circuit for d |
| 6115000 |
Antenna assembly comprising whip antenna and helical antenna contained in antenna top rotatably |
September 5, 2000 |
| An antenna assembly (30) includes a whip antenna (11) and an antenna top (12) has a helical antenna (18) and mounted on a top end of the whip antenna. The antenna assembly is slidably mounted on a cellular telephone set (20) and movable between an extended position and a retracted po |
| 6069475 |
Magnetic sensor utilizing impedance variation of a soft magnetic element in dependence upon a ma |
May 30, 2000 |
| A magnetic sensor (31) includes an insulator substrate (37) having first and second surfaces opposite to each other, a soft magnetic element having first and second ends opposite to each other and mounted on the first surface of the insulator substrate, and a conductor mounted on the sec |
| 6051915 |
Piezoelectric transformer |
April 18, 2000 |
| A piezoelectric transformer (21) comprises a piezoelectric rectangular body (23) having equally divided first to fourth regions (A1, A2, A3, and A4) in a longitudinal direction. The first and the fourth regions (A1, A4) are provided with plane electrodes (24, 25, 26, and 27) as input ele |
| 6051156 |
Compound magnetic material and electromagnetic interference suppressor |
April 18, 2000 |
| A thin electromagnetic interference suppressing body effective for electromagnetic interference suppression at a microwave band. As a material of the electromagnetic interference suppressing body, there is provided a composite magnetic body formed by bonding powder made of a semi-har |
| 6038354 |
Optical modulator having a reflection plate mounted on a reflection end with an inclined angle a |
March 14, 2000 |
| An optical modulator (39) includes a substrate (7) exhibiting an electro-optical Pockels effect and having first and second end surfaces (31, 33) opposite to each other. An optical waveguide (9) of a branched interferometer type is formed on the substrate (7) and has first and second |
| 6011887 |
Optical fiber cable |
January 4, 2000 |
| In an optical fiber cable, for effectively suppressing undesired radiant noise propagating in a reinforcing wire or generated from the reinforcing wire without providing an electromagnetic shielding member apart from the optical fiber cable, a buffer layer and an outer jacket of an LAP s |
| 6011516 |
Multiband antenna with a distributed-constant dielectric resonant circuit as an LC parallel reso |
January 4, 2000 |
| A multiband antenna comprises an antenna device which is resonant at two or more different frequencies. The antenna device comprises a first antenna rod (7), a second antenna rod (8), and a distributed-constant dielectric resonator which is a coaxial dielectric resonator (1A) comprising |
| 5998909 |
Piezoelectric transformer |
December 7, 1999 |
| A piezoelectric transformer has input and output terminal electrodes (12c, 12d, 13c, 13d) exposed on a bottom surface thereof. The terminal electrodes are mechanically and electrically connected to connection portions (15a-15d) of a flexible printed circuit (18) for connecting with a |
| 5990773 |
Thermal switch devise comprising reed switch and temperature-sensitive magnetic structure suppor |
November 23, 1999 |
| In a thermal switch device having a reed switch, a temperature-sensitive magnetic cylinder (1) and cylindrical permanent magnets (2a, 2b) disposed around the reed switch (3), and an insulator case (7), the case is provided with an inner cylinder (5) formed in an inner space of the case. |
| 5949179 |
Piezoelectric transformer and power supply including the same |
September 7, 1999 |
| A power supply including a piezoelectric transformer mounted and electrically connected to a defined board region of a printed circuit board having circuit components for forming the power supply together with the piezoelectric transformer. The transformer has FPC for connecting the |
| 5898346 |
Dual-band nonreversible circuit device comprising two nonreversible circuit elements contained i |
April 27, 1999 |
| A dual-band nonreversible circuit device comprises a first circulator element (91) and a second circulator element (92) accommodated in a single housing (50, 50', 60) and operable around a first center frequency (f.sub.A) and a second center frequency (f.sub.B), respectively. The first |
| 5887480 |
Piezoelectric vibratory gyroscope utilizing an energy-trapping vibration mode |
March 30, 1999 |
| A piezoelectric vibratory gyroscope utilizing an energy-trapping vibration mode comprises a piezo-electric plate having a principal surface and polarized in a thickness direction, and first through n-th electrodes (n being an integer not smaller than three) formed in a generally central |
| 5864088 |
Electronic device having the electromagnetic interference suppressing body |
January 26, 1999 |
| An electromagnetic interference suppressing body is provided for suppressing electromagnetic interference by undesirable electromagnetic waves. The body can have a conductive support element and a non-conductive soft magnetic layer provided on at least one surface. The electromagnetic |
| 5854543 |
Inverter circuit for lighting a cold cathode tube by the use of a piezoelectric transformer |
December 29, 1998 |
| In an inverter circuit including a piezoelectric transformer (17) for supplying a voltage signal to a cold-cathode tube (50), a driver (12) for driving the piezoelectric transformer, a voltage-controlled oscillator (11) for producing an oscillation pulse voltage signal having an osci |
| 5850140 |
Electric field sensor having sensor head with unbalanced electric field shield to shield branche |
December 15, 1998 |
| An electric field sensor comprises a substrate 4, an incident optical waveguide 5 formed on the substrate 4, two branched optical waveguides 6 formed on the substrate 4 to be branched from the incident optical waveguide 5 and having refractive indexes, which are variable in response |
| 5847490 |
Piezoelectric transformer wrapped by wrapping member of soft insulating sheet material |
December 8, 1998 |
| A piezoelectric transformer element is wrapped together with primary lead members and secondary lead members by a thin soft insulating sheet, with the primary and secondary lead members being exposed outside the wrapping sheet, so that the transformer element is small in size, and easy i |
| 5837884 |
Humidity sensor using temperature sensing resistor controlled to be at constant temperature of m |
November 17, 1998 |
| A humidity sensor of a heat conduction type which enables a humidity measurement to be produced by a single temperature sensing resistor so as to reduce a change in characteristic depending on a temperature change of the measurement atmosphere and to reduce the cost, comprises a temperat |
| 5827445 |
Composite magnetic article for electromagnetic interference suppressor |
October 27, 1998 |
| A composite magnetic article for use as an electromagnetic interference suppressing body, which comprises soft magnetic powder of at least one soft magnetic composition having a magnetostriction constant, each of particles of the powder being flaky, and organic binding agent binding |
| 5815610 |
Optical modulation system |
September 29, 1998 |
| A system comprises a substrate 4, an incident optical waveguide 5 formed on the substrate for receiving a light beam incident thereto, two phase-shift optical waveguides 6 formed on the substrate 4 to be branched from the incident optical waveguide 4 for varying a phase of a transmitted |
