DR. THAO UYEN NGUYEN, PHARM.D.
Pharmacy at Automation Pkwy, San Jose, CA

6808783, Oct 26, 2004

Jan 17, 2002

10/052621

Gang Herbert Lin - San Jose CA
Thao Nguyen - San Jose CA

Maxtor Corporation - Longmont CO

G11B 566

428 653, 428 657, 428156, 428212, 428215, 428336, 428409, 428694 T, 428694 TS, 428694 TM, 428694 B, 428694 BS, 428694 BM

The present invention is directed to a writable or recordable disk that has radially varying recording properties. In one configuration, the magnetic moment, magnetic remanence, and/or information layer thickness decreases from the disk inner diameter to the disk outer diameter. In one configuration, the writing property or coercivity of the disk decreases from the disk inner diameter to the disk outer diameter. The variation in writing property may be accomplished by varying the thickness of an underlayer to the information layer.

6013336, Jan 11, 2000

Jan 8, 1998

9/004694

Peter Michael Baumgart - San Jose CA
Wing Pun Leung - Arcadia CA
Thao Anh Nguyen - San Jose CA
Andrew Ching Tam - Saratoga CA

International Business Machines Corporation - Armonk NY

B05D 306, B05D 512, G11B 528

427555

A process for creating a "distant bump array" surface texture in a magnetic recording disk for reducing stiction and the disk so textured. The texturing process uses a tightly focused diode-pumped Nd:YLF or Nd:YVO. sub. 4 or other solid-state laser that is pulsed with a 0. 3-90 nanosecond pulse train to produce a plurality of distantly-spaced bumps in the disk surface. The bump creation process is highly controllable, permitting repeated creation of a preselected bump profile such as a smooth dimple or one with a central protrusion useful for low stiction without close spacing or elevated "roughness". Some bump profiles permit texturing of the data-storage region of the disk surface for low stiction without materially affecting magnetic data storage density.

7310194, Dec 18, 2007

Apr 7, 2005

11/101089

Bruce C. Schardt - Stacey CA, US
Erhard Schreck - San Jose CA, US
Jingbo Yu - San Jose CA, US
Michael Mallary - Sterling MA, US
Scott Hughes - Cupertino CA, US
Duc Banh - San Jose CA, US
Kazuhiro Saito - San Jose CA, US
Donald J Brunnett - Plesanton CA, US
Tim Glassburn - Milpitas CA, US
Chris Hawks - Saratoga CA, US
Thao Anh Nguyen - San Jose CA, US
Andrew LeFebvre - Campbell CA, US
Joerg Ferber - San Jose CA, US
Richard K. Oswald - San Jose CA, US
Brian Strom - Cupertino CA, US

Maxtor Corporation - Longmont CO

G11B 21/02

360 75

A disk drive includes a drive housing, a storage disk, a slider and a drive circuitry. The slider magnetically interacts with the storage disk, and includes a read/write head that is positioned to have an actual head-to-disk spacing greater than zero nanometers during rotation of the storage disk. The drive circuitry can determine and/or monitor the actual head-to-disk spacing at any time during the operation of the disk drive based on an amplitude or a change in the amplitude of a signal such as a variable gain amplifier signal. In one embodiment, the slider includes a slider mover that receives current via the drive circuitry and causes a deformation of a portion of the slider to change the head-to-disk spacing based on the amplitude of the signal. In another embodiment, the read/write head moves during substantially consistent rotational velocity of the storage disk from a first actual head-to-disk spacing equal to approximately zero nanometers, to a second actual head-to-disk spacing that is greater than zero nanometers based on a desired amplitude of the signal.

2009004, Feb 19, 2009

Sep 13, 2007

11/898558

JianFeng Xu - Dong Guan, CN
YanChu Xu - San Jose CA, US
LingJun Kong - Dong Guan, CN
LiXin Wu - Dong Guan, CN
Thao Nguyen - San Jose CA, US

SAE Magnetics (H.K.) Ltd. - Hong Kong

G11B 5/55

3602647

A voice coil motor for a hard disk drive includes an inner core having an inner surface, an outer plate having an inner surface, a permanent magnet, and a coil of wire. The outer plate is positioned in spaced relation to the inner core such that a gap is defined between the inner surfaces of the inner core and the outer plate. The permanent magnet is located in the gap and attached to the inner surface of the outer plate. The coil of wire wraps around the inner core to form a solenoid coil. With such structure, the stiffness of the coil is increased. The invention also discloses a disk drive with such VCM in which the coil is directly bonded to the E-block of the hard disk drive. Therefore heat conduction of the hard disk drive is improved.

7502205, Mar 10, 2009

Jun 3, 2004

10/859919

Tony Hurtado - Cupertino CA, US
Wentao Yan - Fremont CA, US
Lin Guo - Saratoga CA, US
Chris Hawks - Saratoga CA, US
Don Brunnett - Pleasanton CA, US
Thao Nguyen - San Jose CA, US
Richard Oswald - San Jose CA, US
Erhard Schreck - San Jose CA, US

Maxtor Corporation - Scotts Valley CA

G11B 21/02, G11B 5/55

3602947, 360 75, 36012531, 36012574

A control source and drivers for a thermal actuator fly height controlled heads in a disk drive system includes provisions for driving a heater element to dissipate various levels of power, and thus actuate the head by a desired amount, depending on whether the head is in a write mode or a read mode. Further, overshoot and undershoot are achieved as desired by providing initial values and equilibrium values and through the use of a control capacitor to provide a time constant to the drive signal to the heater element.