Kuo Wei Hwang

US Patent:

20060246323, Nov 2, 2006

Filed:

Apr 27, 2005

Appl. No.:

11/115331

Inventors:

Connie Liu - San Jose CA, US
Qixu Chen - Milpitas CA, US
Shanghsien Rou - Fremont CA, US
Romulo Ata - San Jose CA, US
Kuo Hwang - San Jose CA, US

Assignee:

SEAGATE TECHNOLOGY LLC - Scotts Valley CA

International Classification:

G11B 5/66
C23C 14/00

US Classification:

428829000, 428836200, 428836300, 204192200

Abstract:

A magnetic recording medium having a substrate, a first magnetic layer having a perpendicular anisotropy and a second magnetic layer having a perpendicular anisotropy, wherein the second magnetic layer contains substantially no dielectric material, (such as, but not limited to, oxides, carbides, and nitrides) is disclosed. Also disclosed is a method for manufacturing the magnetic recording medium of the embodiments of this invention.

US Patent:

20060286413, Dec 21, 2006

Filed:

Jun 17, 2005

Appl. No.:

11/154637

Inventors:

Connie Liu - San Jose CA, US
Xiaoding Ma - Fremont CA, US
Qixu Chen - Milpitas CA, US
Shanghsien Rou - Fremont CA, US
Mariana Munteanu - Santa Clara CA, US
Miaogen Lu - Fremont CA, US
Michael Wu - San Jose CA, US
Kuo Hwang - San Jose CA, US

Assignee:

SEAGATE TECHNOLOGY LLC - Scotts Valley CA

International Classification:

G11B 5/66

US Classification:

428829000, 428830000, 428836200

Abstract:

A magnetic recording medium having a substrate, a granular magnetic layer and a magnetic cap layer covered with carbon overcoat, in this order, wherein both the granular magnetic and magnetic cap layers contain magnetic grains and non-magnetic grain boundaries, and further wherein the magnetic cap layer has denser grain boundaries and the magnetic cap layer contains substantially no oxide is disclosed. The magnetic cap layer serves as both magnetic layer and corrosion barrier for lower HMS.

US Patent:

48699039, Sep 26, 1989

Filed:

Apr 8, 1988

Appl. No.:

7/179274

Inventors:

Jeffrey D. Lifson - Menlo Park CA
Michael S. McGrath - Burlingame CA
Hin-Wing Yeung - Kowloon, HK
Kuo Hwang - Danville CA

Assignee:

Genelabs Incorporated - Redwood City CA

International Classification:

A61K 3702
A61K 3578
A61K 3580
C07G 700

US Classification:

4241951

Abstract:

A method of inhibiting HIV replication in and cellular proliferation of HIV-infected cells. The infected cells are exposed to a single-chain ribosome inactivating protein, at a protein concentration and for an exposure period sufficient to produce a substantial reduction in (a) the level of HIV antigen or reverse transcriptase associated with the infected cells, (b) the ratio of viability of infected/uninfected T cells, and/or (c) the ratio of HIV antigen/cellular antigen in infected macrophages. The method is used to treat HIV infection in humans.

US Patent:

20180047421, Feb 15, 2018

Filed:

Oct 23, 2017

Appl. No.:

15/790273

Inventors:

- Cupertino CA, US
Ian J. Beresford - Milpitas CA, US
Thomas Y. Chang - Menlo Park CA, US
Kuo Hsing Hwang - San Jose CA, US
James Hennessy - Campbell CA, US
David Perez - E. Palo Alto CA, US

International Classification:

G11B 5/82
G11B 33/02
G11B 5/55
G11B 5/39
G11B 19/20
G11B 5/73
G11B 19/28
G11B 20/12

Abstract:

Apparatus and method for magnetic recording media. A rotatable magnetic recording disc has an outermost annular sidewall that extends at nominally 97 millimeters, mm for a 3 inch form factor data storage device or at nominally 67 mm for a 2 inch form factor data storage device. The rotatable magnetic recording disc further has a disc shaped substrate of metal or glass, and a magnetic recording layer supported by the disc shaped substrate and configured to magnetically record data along concentric tracks.

US Patent:

20170249967, Aug 31, 2017

Filed:

May 15, 2017

Appl. No.:

15/595514

Inventors:

- Cupertino CA, US
Ian J. Beresford - Milpitas CA, US
Thomas Y. Chang - Menlo Park CA, US
Kuo Hsing Hwang - San Jose CA, US
James Hennessy - Campbell CA, US
David Perez - E. Palo Alto CA, US

International Classification:

G11B 5/82
G11B 5/39
G11B 19/20
G11B 5/55
G11B 33/02
G11B 19/28
G11B 20/12
G11B 5/73

Abstract:

An enlarged substrate configuration for magnetic recording media. In some embodiments, an apparatus comprises a disc shaped member of metal or glass configured as a substrate for a magnetic data recording disc for a 2 inch form factor data storage device or a 3 inch form factor data storage device. The disc shaped member has a top planar surface, an opposing bottom planar surface, an outermost annular sidewall that extends between the top planar surface and the bottom planar surface at an outermost diameter of nominally 67 or 97 millimeters, respectively, and an inner annular sidewall that extends between the top planar surface and the bottom planar surface to define a central aperture.

US Patent:

20170076750, Mar 16, 2017

Filed:

Nov 28, 2016

Appl. No.:

15/362352

Inventors:

- Cupertino CA, US
Ian J. Beresford - Milpitas CA, US
Thomas Y. Chang - Menlo Park CA, US
Kuo Hsing Hwang - San Jose CA, US
James Hennessy - Campbell CA, US
David Perez - E. Palo Alto CA, US

International Classification:

G11B 20/12
G11B 5/48
G11B 19/20
G11B 5/55
G11B 33/02

Abstract:

A data storage device having a housing member for a selected one of a 3 inch form factor hard disc drive (HDD) or a 2 inch form factor HDD. A spindle motor coupled to the housing member supports a rotatable data recording disc with a plurality of data tracks and an outermost perimeter. The outermost perimeter has an average overall radius of 48.5 millimeters, mm responsive to the housing member being for a 3 inch form factor HDD or an average overall radius of 33.5 mm responsive to the housing member being for a 2 inch form factor HDD. The rotatable data recording disc further has an outermost data track at an average selected radius such that the difference between the average overall radius of the outermost perimeter and the average selected radius is more than 1 mm.

US Patent:

20160284373, Sep 29, 2016

Filed:

Jun 6, 2016

Appl. No.:

15/174177

Inventors:

- Cupertino CA, US
Ian J. Beresford - Milpitas CA, US
Thomas Y. Chang - Menlo Park CA, US
Kuo Hsing Hwang - San Jose CA, US
James Hennessy - Campbell CA, US
David Perez - E. Palo Alto CA, US

International Classification:

G11B 5/82
G11B 20/12

Abstract:

A hard disc drive (HDD) with an enlarged magnetic recording disc. In some embodiments, a base deck and top cover are arranged to provide an HDD housing with a 2 inch form factor or a 3 inch form factor. A magnetic recording disc is supported for rotation within the housing. A data transducer is controllably advanced across a recording surface of the magnetic recording disc to write data to the recording surface, and a printed circuit board assembly (PCBA) affixed to an external surface of the base deck incorporates control electronics to provide write signals to the data transducer during the writing of data to the recording surface. The disc has an outer diameter of at least 67 millimeters, mm for the 2 inch form factor housing and has an outer diameter of at least 97 mm for the 3 inch form factor housing.

US Patent:

20160118072, Apr 28, 2016

Filed:

Jan 4, 2016

Appl. No.:

14/987379

Inventors:

- Cupertino CA, US
Ian J. Beresford - Milpitas CA, US
Thomas Y. Chang - Menlo Park CA, US
Kuo Hsing Hwang - San Jose CA, US
James Hennessy - Campbell CA, US
David Perez - E. Palo Alto CA, US

International Classification:

G11B 5/82
G11B 33/02
G11B 19/28
G11B 5/55
G11B 19/20

Abstract:

An enlarged substrate for a magnetic recording medium used in a data storage device such as a hard disc drive (HDD). In some embodiments, a data storage device has a housing member for a 3 inch form factor storage device or a 2 inch form factor storage device. A rotatable data recording disc is supported by the housing member. The disc has a plurality of tracks formed thereon. At least one track of the plurality of tracks has an average radius of greater than 47.5 mm for the 3 inch form factor storage device or greater than 32.5 mm for the 2 inch form factor storage device. A data read/write transducer is configured to be controllably advanced across a recording surface of the data recording disc and to record data to the plurality of tracks.