| Patent Number |
Title Of Patent |
Date Issued |
| 7200096 |
Method and apparatus for the modulation of multilevel data arrays |
April 3, 2007 |
| A method and apparatus for modulating multilevel data arrays to make them suitable for storage in multidimensional storage media, such as in holographic storage. In order to get a uniform signal of constant energy at the recording plane, first the multilevel data array, V.sub.out, di |
| 7170029 |
Method and apparatus for deflashing of integrated circuit packages |
January 30, 2007 |
| This invention relates to a method and apparatus for deflashing integrated circuit (IC) packages by laser irradiation. The method and apparatus include two lasers scanning flash area for performing deflashing operation. CO.sub.2 laser is used to remove top layer of flash and YAG lase |
| 6838637 |
Method and apparatus for deflashing of integrated circuit packages |
January 4, 2005 |
| This invention relates to a method and apparatus for deflashing integrated circuit (IC) packages by laser irradiation. The method and apparatus include two lasers scanning flash area for performing deflashing operation. CO.sub.2 laser is used to remove top layer of flash and YAG lase |
| 6835319 |
Method of patterning a substrate |
December 28, 2004 |
| A method of patterning a substrate includes forming a liquid film on the substrate surface and directing laser energy from a laser through the film to etch the substrate surface. Etched material is carried away from the substrate surface via evaporation of the film during the etching. Th |
| 6822189 |
Method of laser marking and apparatus therefor |
November 23, 2004 |
| A method of laser marking, suitable for the marking of hard transparent materials without causing microcracking, includes arranging a sample of target material and a sample of markable material such that they are spaced apart; directing irradiation having an energy fluence above the |
| 6821448 |
Methods for producing thin film magnetic devices having increased orientation ratio |
November 23, 2004 |
| A method of producing a thin film magnetic device comprising forming a thin film of magnetic material over a surface of a substrate having a controlled surface topography, wherein the surface of the substrate is first subject to isotropic etching so as to increase the capacity of the |
| 6794057 |
Laminated antiferromagnetically coupled media for data storage |
September 21, 2004 |
| A configuration for laminated antiferromagnetically coupled magnetic recording layers for a magnetic recording medium is described. For this purpose, a stabilization layer (top layer) is put on top of the main magnetic recording layer (middle layer) and another stabilization layer (b |
| 6777642 |
Method and apparatus for cleaning surfaces |
August 17, 2004 |
| This invention relates to a method and apparatus for cleaning solid surfaces like Si substrate, disk or magnetic head slider where contaminants, including organic contaminants, especially particles in the micron or sub-micron scale are effectively remove from the solid surfaces. The |
| 6730197 |
Oblique deposition apparatus |
May 4, 2004 |
| An oblique sputtering deposition apparatus is provided for preparing a thin film. A collimator having angled passages for filtering out particles from stray directions is placed between the substrate and the incident particle flux. The angle of the passages can be adjusted from about 0 t |
| 6719841 |
Manufacturing method for high-density magnetic data storage media |
April 13, 2004 |
| A method of fabricating a high-density magnetic data-storage medium, the method comprising the steps of: (a) forming a plurality of nanodots of non-magnetic material in a regular array on a surface of a substrate, said array being notionally dividable into a plurality of clusters that ea |
| 6717308 |
Electric spindle motor and method having magnetic starting/stopping device |
April 6, 2004 |
| A high precision spindle suitable for hard disk drives, optical disk drives, such as DVDs, CD drives, and other applications includes a hub, a hybrid hydrodynamic an aerodynamic bearing system, a brushless motor, a starting/stopping assistant device and a base. The hybrid fluid film |
| 6699332 |
Method of producing a magnetic recording medium |
March 2, 2004 |
| A method of producing a magnetic recording medium comprising the steps of providing a substrate having a layer of a non-magnetic material that can be converted into a magnetic state by annealing, and then converting selected portions of the non-magnetic layer to a magnetic state by s |
| 6693762 |
Method and apparatus for load/unload testing of disk drives |
February 17, 2004 |
| The invention provides an apparatus (10) and method for monitoring the load/unload process of a head-gimbal assembly (HGA) (14), disk (12) and ramp (16) combination. A ramp strain arm (18) is used to monitor the entire load/unload process. The ramp strain arm (18), on which the ramp |
| 6674201 |
Spindle motor with an aerodynamic and hydrodynamic bearing assembly |
January 6, 2004 |
| A spindle motor (10) including a stator component (16), a rotor component (18), including a hub (14) for supporting one or more discs, and a bearing assembly between tHe components, formed of a journal bearing (54) and a thrust bearing (52), wherein the journal bearing (54) is an aerodyn |
| 6641702 |
Sputtering device |
November 4, 2003 |
| The present invention is directed to a sputtering device for depositing multi-layer films on a substrate, the sputtering device comprising at least one planar-magnetron-sputtering-cathode and at least one facing-targets-sputtering-cathode housed in a single vacuum chamber, and adapte |
| 6633457 |
Actuator assembly with orthogonal force generation |
October 14, 2003 |
| An actuator assembly for positioning read/write heads above a data storage media comprises a pivotally mounted carriage arm assembly with a voice coil and a magnetic device having a plurality of poles for generating a magnetic field. The voice coil is positioned with its effective portio |
| 6633439 |
Optical recording system with aspherical solid immersion lens |
October 14, 2003 |
| The present invention provides an improved optical reading and recording system utilizing optical system employing an aspherical solid immersion lens (SIL). The improved optical system has an aspherical SIL between an objective lens and the recording media. The aspherical SIL reduces the |
| 6597618 |
Magnetic tunnel junction magnetic random access memory |
July 22, 2003 |
| A circuit for controlling a read operation for a magnetic random access memory (MRAM) comprising an array of magnetic tunnel junctions (MTJ) having conducting row and column lines attached thereto. The circuitry comprises a current supply for providing a read current, and a row selec |
| 6576867 |
Method and apparatus for removal of mold flash |
June 10, 2003 |
| A method and apparatus for the removal of mold flash from an IC device using a non-thermal laser ablation method. Ablation is achieved under conditions in which the mold flash is converted to plasma under short laser pulses which do not give sufficient time or energy for significant |
| 6545378 |
Electric spindle motor with magnetic bearing and hydrodynamic bearing |
April 8, 2003 |
| An electric spindle motor for use in precision instruments such as hard disk drives comprises a stationary sub-assembly and a rotary sub-assembly movable relative to the stationary sub-assembly for carrying magnetic disks. The electric spindle motor has an integrated bearing system i |
| 6522050 |
Head suspension assembly with piezoelectric beam micron actuator |
February 18, 2003 |
| A micro actuator driven load beam mechanism for use in a head suspension assembly is disclosed. The mechanism includes a load beam including a proximal end portion and a distal end portion, a hinge portion connecting the proximal and distal end portions of the load beam for permitting |
| 6518540 |
Method and apparatus for providing ablation-free laser marking on hard disk media |
February 11, 2003 |
| A method and apparatus for creating ablation-free visible markings on a multi-layer hard disk magnetic storage media by laser-induced deformation while maintaining the integrity of the protective carbon layer, and without destroying the multi-layered structure of the media. The apparatus |
| 6366081 |
Method and apparatus for high throughput media defect testing using true reference value |
April 2, 2002 |
| A method and apparatus are provided for efficiently testing magnetic media in which a read level test is performed using an approximation for an average signal level in determining a test threshold and while reading data and testing against the approximate average read signal level, the |
| 6219192 |
Method and apparatus for the compensation of an additive signal in a data signal |
April 17, 2001 |
| The method and apparatus have application to the compensation of transient signals produced on reading a data storage device with a magneto-resistive head due to thermal contact with asperities on the data storage medium. Preferably, the data channel employs partial-response maximum-like |
| 6201390 |
Defect analysis in magnetic thin films |
March 13, 2001 |
| A method of analyzing defects in a magnetic thin film is provided. A magnetic field is applied to the magnetic thin film. The magnetization of the magnetic thin film is measured over a range of different field strengths. A value representative of a magnetic hardness coefficient is ca |
| 6020664 |
Electric spindle motor |
February 1, 2000 |
| An electric spindle motor has a base assembly (19) and a hollow notatable hub (16) housing a motor. The hub (16) is mounted for rotation about an axis and a stator (12) is mounted on the base assembly (19) inside the hub (16). A liquid filled journal bearing (11, 21) acts between the bas |
