| Patent Number |
Title Of Patent |
Date Issued |
| D534576 |
Toner cartridge |
January 2, 2007 |
|
| D524850 |
Toner cartridge |
July 11, 2006 |
|
| 7405421 |
Optical integrated device |
July 29, 2008 |
| The present invention provides an optical device integrating an active device with a passive device without any butt joint structure between two devices. The optical integrated device of the invention includes a GaAs substrate, first and second cladding layers, and an active layer sa |
| 7379485 |
Semiconductor optical device |
May 27, 2008 |
| In a semiconductor optical device, the first conductive type semiconductor region includes a first semiconductor portion and a second semiconductor portion. The first and second regions of the first semiconductor portion are arranged along a predetermined plane. The second semiconductor |
| 7356063 |
Semiconductor surface emitting device |
April 8, 2008 |
| This surface emitting semiconductor device 1 comprises a first conductivity type semiconductor region, an active layer, a second conductivity type semiconductor layer and current block semiconductor region. The first conductivity type semiconductor region is provided on a surface mad |
| 7323722 |
Semiconductor optical device |
January 29, 2008 |
| In a semiconductor optical device, a first conductive type semiconductor region is provided on a surface of GaAs. The first conductive type semiconductor region has a first region and a second region. An active layer is provided on the first region of the first conductive type semico |
| 7305017 |
Semiconductor optical device |
December 4, 2007 |
| In a semiconductor optical device, the semiconductor substrate has a primary surface intersecting with a predetermined axis. The lower cladding region of the first conductive type is provided on the primary surface thereof. The lower cladding region includes ridge regions and a base |
| 7271422 |
Semiconductor optical device |
September 18, 2007 |
| In a semiconductor optical device, a first conductive type semiconductor region includes first and second semiconductor portions. The first and second semiconductor portions are made of nitride mixed semiconductor crystal. This first semiconductor portion has a first region and a second |
| 7208774 |
Semiconductor optical device |
April 24, 2007 |
| In a semiconductor optical device, a first conductive type semiconductor region is provided on a surface of GaAs. The first conductive type semiconductor region has a first region and a second region. An active layer is provided on the first region of the first conductive type semico |
| 7106981 |
Image forming apparatus |
September 12, 2006 |
| An image forming apparatus includes a plurality of printing units each having an image bearing member for rotation about an axis and a process member which cooperates with the image bearing member in an image forming process; a transfer member for moving in contact with the image bearing |
| 7088746 |
Laser module |
August 8, 2006 |
| Provided is a fiber grating laser for optical communication which can be used as a light source regardless of the occurrence of mode hopping. The laser module comprises a semiconductor optical amplifier device, an optical waveguide such as an optical fiber, and a diffraction grating |
| 6819700 |
Method of manufacturing an external cavity semiconductor laser, external cavity semiconductor la |
November 16, 2004 |
| An external cavity semiconductor laser comprises a grating fiber and a semiconductor optical amplification element. The grating fiber has a Bragg grating and an optical waveguide. The Bragg grating has a frequency f.sub.FG and exhibits a maximum reflectivity thereat. The Bragg grating is |
| 6808784 |
Glass substrate for magnetic recording media and manufacturing method thereof |
October 26, 2004 |
| There is provided a glass substrate for magnetic recording media, which enables damage to a magnetic recording medium using the glass substrate to be prevented. The glass substrate is a donut-shaped glass substrate comprising major surfaces, an outer peripheral edge surface, an inner |
| 6805492 |
Ferrule product, method of making the same, and optical module |
October 19, 2004 |
| A ferrule product 30b is utilized in an optical module 5 comprising a semiconductor optical amplifier 55 having a pair of end facets. The ferrule product 30b comprises an optical fiber 51 and a ferrule 52. The optical fiber 51 has one end part, optically coupled with one of the pair |
| 6700758 |
Magnetoresistive effect type of head, manufacturing method of magnetoresistive effect type of he |
March 2, 2004 |
| A magnetoresistive head reproduces information recorded on a recording medium with high recording density, suppressing generation of Barkhausen noise. A magnetoresistive effect element in the head is a flat multi-layer film in which a free magnetic layer is set to a lowest layer. The hea |
| 6624867 |
Liquid crystal display unit and electronic apparatus provided with the liquid crystal display un |
September 23, 2003 |
| The present invention concerns electronic equipment having a liquid crystal display that is capable of reducing the external size of the electronic equipment by reducing installation space, while increasing display area. A display part and a pattern wiring area of a liquid crystal displa |
| 6483228 |
Sensor array and transmitting/receiving device |
November 19, 2002 |
| An ultrasonic probe serving as a sensor array used in a transmitting/receiving device includes a substrate made of a packing material. A plurality of piezoelectric vibrators shaped like a rectangular parallelepiped are fixed in a matrix on one principal surface of the substrate. Each |
| 6480611 |
Headphone having a cord reel |
November 12, 2002 |
| A headphone includes a housing assembly having an electroacoustic transducer accommodated therein and an insertion hole defined therein. A winding mechanism is accommodated in the housing assembly for winding an input cord into the housing assembly. The winding mechanism includes a c |
| 6411637 |
Semiconductor laser and method of manufacturing the same |
June 25, 2002 |
| A semiconductor laser with a separate confinement hetero-structure (SCH) comprises an n-type GaInP lower cladding layer, a lower optical confinement layer, a GaInAs active layer, a upper optical confinement layer, and a p-type GaInP first upper cladding layer. These layers are succes |
| 6111491 |
Magnetic screw |
August 29, 2000 |
| A magnetic screw having a screw shaft of magnetic material having thread crests formed on the outer peripheral surface thereof, and a magnetic nut fitted on the outer periphery of the screw shaft. The magnetic nut includes annular permanent magnets magnetized with magnetic poles of o |
| 6067310 |
Semiconductor laser and method of making the same |
May 23, 2000 |
| In the present method, at the time when a semiconductor laser is being made, nitrogen or phosphorus element is introduced into an active layer comprising a GaAs based compound from an end face thereof, thereby changing the region of the active layer in the vicinity of the end face in |
| 5734671 |
Semiconductor laser diode |
March 31, 1998 |
| A semiconductor laser diode which can be applied to optical fiber amplifiers to attain a high reliability and can generate light having a wavelength of about 1 .mu.m is provided. This semiconductor laser diode is formed on a GaAs substrate and has an active layer comprising a GaInAsP |
| 5687614 |
Magnetic screw device |
November 18, 1997 |
| This magnetic screw device comprises a screw shaft made of magnetic material and having thread ridges formed on the outer peripheral surface thereof, and a nut body fitted on the screw shaft with a clearance defined therebetween. The nut body comprises a magnetic sleeve having a smoothly |
| 5663975 |
Multi-beam semiconductor laser with separated contacts characterized by semiconductor mixed crys |
September 2, 1997 |
| This semiconductor laser includes resistors as heating means through insulation films for generating pre-heat of substantially the same calorie as oscillation heat generated when the laser resonator are driven. When the light emitting regions as the light source are driven, first the |
| 5643686 |
Magnetic recording medium and method for manufacturing the same |
July 1, 1997 |
| A fixed permanent pattern is used for identifying a magnetic recording medium and a high security against forgery or modification is obtained by a magnetic recording medium including a non-magnetic support and at least two magnetic layers formed on said support, characterized in that at |
| 5617957 |
Method of sorting semiconductor lasers |
April 8, 1997 |
| It is an object to provide a method of sorting semiconductor lasers, capable of appropriately removing semiconductor lasers which can cause a so-called sudden death in use. After a first current within a range of 50 to 150% the maximum rated current is supplied to the semiconductor laser |
| 5586135 |
Semiconductor laser having an AlGaInP cladding layer |
December 17, 1996 |
| A semiconductor laser includes a GaAs substrate, an active layer made of a semiconductor material having a band gap energy smaller than that of GaAs, and a top clad having an AlGaInP cladding layer. An index antiguiding type semiconductor laser is constituted based on the above structure |
| 5479427 |
Semiconductor laser and method of manufacturing the same |
December 26, 1995 |
| In a semiconductor laser having a p-type cladding layer consisting of GaInP or AlGaInP, an operating voltage is decreased. In a semiconductor laser formed on a GaAs substrate and having a p-type cladding layer consisting of GaInP or AlGaInP and a p-type contact layer consisting of GaAs o |
| 5446537 |
Method of sorting semiconductor lasers |
August 29, 1995 |
| It is an object to provide a method of sorting semiconductor lasers, capable of appropriately removing semiconductor lasers which can cause a so-called sudden death in use. After a first current within a range of 50 to 150% the maximum rated current is supplied to the semiconductor laser |
| 5398543 |
Method and apparatus for detection of vacuum leak |
March 21, 1995 |
| The present invention provides a method for detection of a vacuum leak of a vacuum vessel provided in an equipment, for example, an absorption chiller, and in which water and a solution (for example, lithium bromide solution) are charged. The gas in the vacuum vessel is purged by an |
| 5359619 |
Multi-beam semiconductor laser and method for producing the same |
October 25, 1994 |
| This is disclosed a multi-beam semiconductor laser comprising: an active layer; a first and second cladding layer sandwiching the active layer,the second cladding layer being made of a first material; a contact layer provided on the second cladding layer; a current block layer provided i |
| 5320200 |
Friction pad with shim for use in disc brake |
June 14, 1994 |
| A friction pad includes a flat back plate, a friction member fixed to one surface of the back plate, a shim in the form of a thin plate attached to the other surface of the back plate, and a viscous fluid applied between the back plate and the shim. The shim is formed with semi-circular |
| 4504163 |
Mechanical pencil with automatic lead advance |
March 12, 1985 |
| A mechanical pencil having a writing point tube slidably mounted on the forward end portion of a pencil casing, an annular slider device slidably mounted within the pencil casing and having a lead retainer, a first spring for urging the writing point tube in the forward direction, a |
| 4500220 |
Mechanical pencil with removable lead feed cover |
February 19, 1985 |
| A mechanical pencil includes a removable tubular cover which has functions to protect a tip of the pencil and also to advance automatically the lead therein a tiny increment to project from the pencil tip when it is attached to a rear end of the pencil for writing purposes and to a front |
| 4459057 |
Mechanical pencil with automatic lead advance |
July 10, 1984 |
| A mechanical pencil with automatic lead advance in which a slider is temporarily locked at the time when a rearward thrust applied to the pencil tip is released. The slider is locked by an arrangement in which a movable locking tube is disposed around the slider. The locking tube can |
| 4411543 |
Self-feeding mechanical pencil |
October 25, 1983 |
| A mechanical pencil is of the type in which a writing lead can be advanced by the extent to which the lead has been worn without changing the writing posture of the pencil. The pencil has a lead holder slidably mounted lengthwise within a casing, a lead guide tube slidably mounted within |
| 4360280 |
Mechanical pencil having a lead detector |
November 23, 1982 |
| A mechanical pencil of knocking operated type includes an electrical indicator which provides a visible or audible indication of the presence or absence of a writing lead in the mechanical pencil. A power supply in the form of a cell or storage battery is loaded into a pen body. A first |
| 4299506 |
Mechanical pencil |
November 10, 1981 |
| A mechanical pencil is disclosed which comprises a casing having a ferrule at its tip end and having an axially extending central bore formed therein, and a lead-containing sleeve fitted into the central bore and capable of containing a plurality of leads. The mechanical pencil includes |
| 4211500 |
Tip-pushed type mechanical pencil |
July 8, 1980 |
| A tip-pushed type mechanical pencil permits a forward advance of a pencil lead by pressing the front end of the pencil against a writing surface and then releasing it. The mechanical pencil includes an outer cylinder in which an inner cylinder having a ferrule is fitted. The inner cylind |
