Michael C Chang

US Patent:

8576506, Nov 5, 2013

Filed:

Jun 21, 2012

Appl. No.:

13/529817

Inventors:

Honge Wang - Irvine CA, US
Michael Chang - San Jose CA, US
Abhishek Dhanda - San Jose CA, US
Huanxiang Ruan - Irvine CA, US
Guoxiao Guo - Irvine CA, US

Assignee:

Western Digital Technologies, Inc. - Irvine CA

International Classification:

G11B 5/09

US Classification:

360 50, 360 51, 360 39, 360 7708

Abstract:

A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of servo sectors defining a plurality of servo tracks. The servo tracks form a plurality of servo zones. A disk locked clock is synchronized relative to a servo data rate of the servo zone the head is over. A first reader/writer gap is measured in cycles of the disk locked clock at a first servo track in the first servo zone. A second reader/writer gap is measured in cycles of the disk locked clock at a second servo track in the second servo zone. The first and second reader/writer gaps are normalized to generate a normalized first and second reader/writer gaps. A third reader/writer gap is estimated in cycles of the disk locked clock at a third servo track in the second servo zone based on the normalized first and second reader/writer gaps.

US Patent:

20040043682, Mar 4, 2004

Filed:

Sep 4, 2002

Appl. No.:

10/236053

Inventors:

Steven Taylor - Glendora CA, US
Mark Longfellow - Foothill Ranch CA, US
Norman Tracy - Huntington Beach CA, US
Robert Henderson - Tustin CA, US
Michael Chang - Irvine CA, US
Roland Weber - Rancho Palos Verdes CA, US

International Classification:

B32B027/12
B32B013/02
B32B013/14
B32B005/02
B32B027/04

US Classification:

442/042000, 442/043000, 442/045000, 442/049000

Abstract:

A composite board for use as backerboard for tile, the board including a mesh layer with a mesh fabric, a mat layer with a mat fabric and a polystyrene layer disposed between the two portions where a non-shrinking cement compound saturates and connects the two outer portions with the polystyrene substrate. The composite board's mesh layer incorporates a stretchable mesh which in conjunction with the polystyrene substrate and the non-shrinking cement compound supports standard fasteners used in the home-building industry along with providing a suitable tile adhesion surface. The mat layer incorporates a fiberglass mat which provides high rigidity as well as being suitable for contact with an inner wall or studs. The combination of materials provides a backerboard that is light weight, rigid, economical and easy to build with.

US Patent:

20060183387, Aug 17, 2006

Filed:

Dec 14, 2005

Appl. No.:

11/304987

Inventors:

Steven Taylor - Glendora CA, US
Mark Longfellow - Foothill Ranch CA, US
Norman Tracy - Huntington Beach CA, US
Robert Henderson - Tustin CA, US
Michael Chang - Irvine CA, US
Roland Weber - Rancho Palos Verdes CA, US

International Classification:

B32B 5/24

US Classification:

442030000, 442035000, 442042000, 442043000, 442045000, 442046000, 442048000, 442049000, 442164000, 442180000, 428304400, 428318400, 442370000, 442221000

Abstract:

A composite board for use as backerboard for tile includes outer reinforcement portions and a polystyrene layer disposed between the two outer reinforcement portions, at least one of the outer reinforcement portions being an outer mat fabric reinforcement layer with a mat fabric, and a non-shrinking cement compound saturating and connecting the two outer portions with the polystyrene substrate. A method of installing a composite tile backerboard involves placing the composite board against a fixture protruding from a flat surface, pressing the composite board against the fixture to emboss the features of the fixture on the surface of the composite board, and cutting a hole in the composite board based upon the features of the fixture embossed on the composite board.

US Patent:

20070052886, Mar 8, 2007

Filed:

Mar 23, 2006

Appl. No.:

11/388222

Inventors:

Bunsen Fan - Cortlandt Manor NY, US
Michael Chang - Los Angeles CA, US

International Classification:

G02F 1/1335

US Classification:

349098000

Abstract:

Provided herein is an ophthalmic lens and methods for making an ophthalmic lens. The ophthalmic lens includes a body having one or more films having at least one spectral reflection band. The reflection band includes spectral reflection properties to reflect right handed circularly polarized light, left handed circularly polarized light, or a combination of right handed circularly polarized light and left handed circularly polarized light.

US Patent:

20130271775, Oct 17, 2013

Filed:

Apr 11, 2012

Appl. No.:

13/444599

Inventors:

Michael M. Chang - Redondo Beach CA, US

Assignee:

KYOCERA DOCUMENT SOLUTIONS INC. - Osaka

International Classification:

H04N 1/60
G06K 15/02

US Classification:

358 19

Abstract:

Methods and systems for accommodating color ranges are provided. A source light-to-dark dynamic range of a first output medium may be obtained with a source white point and a source black point. A destination light-to-dark dynamic range of a second output medium may be obtained with a destination white point and a destination black point. A white point mapping and a black point mapping may be determined. Based on a first representation of an image on the first output medium, a second representation of the image may be created by interpolating the source light-to-dark dynamic range to the destination light-to-dark dynamic range based on the white point mapping and the black point mapping. A computing device may cause the second output medium to produce the representation of the image.

US Patent:

51324636, Jul 21, 1992

Filed:

Jun 12, 1991

Appl. No.:

7/713895

Inventors:

Donald W. Graham - Mountainside NJ
John C. Chabala - Westfield NJ
Tesfaye Biftu - Parlin NJ
Michael N. Chang - Newtown PA
Yuan-Ching P. Chiang - Piscataway NJ
Shu S. Yang - Bridgewater NJ
Kathryn L. Thompson - Westfield NJ

Assignee:

Merck & Co., Inc. - Rahway NJ

International Classification:

C07C31714
C07C31722

US Classification:

568 33

Abstract:

Novel 1,3-Diaryl cyclopentanes of the following general formula were prepared. ##STR1## These compounds were found to have potent and specific PAF (Platelet Activating Factor) antagonistic activities and as such useful in the treatment or amelioration of various diseases or disorders mediated by the PAF, for example, hypotension, inflammation, nephritis, stroke and other cardiovascular disorders, asthma, allergic and skin diseases, peptic or stomach ulcer, shock, lung edema, psoriasis, adult respiratory distress syndrome, pain including dental pain, and aggregation of platelets.

US Patent:

49201069, Apr 24, 1990

Filed:

Aug 1, 1989

Appl. No.:

7/388716

Inventors:

Michael N. Chang - Westfield NJ
Yuan-Ching P. Chiang - Piscataway NJ
James V. Heck - Scotch Plains NJ
Michael D. Lewis - Rahway NJ
Shu S. Yang - Bridgewater NJ

Assignee:

Merck & Co., Inc. - Rahway NJ

International Classification:

A61K 31695
C07D31720

US Classification:

514 63

Abstract:

This invention relates to acetylenic cyclic carbonates that are useful in the treatment of fungal diseases and hypercholesterolemic conditions.

US Patent:

46862358, Aug 11, 1987

Filed:

Aug 12, 1985

Appl. No.:

6/764446

Inventors:

Michael N. Chang - Westfield NJ
Norman P. Jensen - Princeton NJ
Milton L. Hammond - Somerville NJ
Robert A. Zambias - Springfield NJ
John McDonald - Indianapolis IN
Kathleen M. Rupprecht - Cranford NJ

Assignee:

Merck & Co., Inc. - Rahway NJ

International Classification:

C07C 3921
A61K 3105

US Classification:

514520

Abstract:

Substituted cinnamyl-2,3-dihydrobenzofurans and analogs were prepared from the nucleophlic substitution of a cinnamylhalide with a 2,3-dihydrobenzofuran anion or an analog thereof. These compounds were found to be potent topical anti-inflammatory agents.