Jian Chen

US Patent:

6374032, Apr 16, 2002

Filed:

Apr 22, 1999

Appl. No.:

09/299553

Inventors:

Hongwei Mao - San Jose CA
Jian Chen - San Jose CA
Brian Liu - San Jose CA

Assignee:

JDS Uniphase Corporation - San Jose CA

International Classification:

G02B 600

US Classification:

385140, 385 25, 359236

Abstract:

A variable optical attenuator is described. A special profile blocker is rotated across a large angel (e. g. , 180Â to 360Â) to provide a variable amount of attenuation. In one embodiment, the special profile blocker is an eccentrically driven wheel. The special profile blocker is driven by a stepper motor via a gear assembly. In one embodiment, the variable optical attenuator includes a beam splitter for the input and/or the output signal for monitoring of signal strength and/or feedback control of the attenuator.

US Patent:

6376506, Apr 23, 2002

Filed:

Dec 22, 1999

Appl. No.:

09/469677

Inventors:

Chris Allen Broka - Foster City CA
Jeffrey Allen Campbell - Cheshire CT
Arlindo Lucas Castelhano - New City NY
Jian Jeffrey Chen - Santa Clara CA
Robert Than Hendricks - Palo Alto CA
Michael Joseph Melnick - Ann Arbor MI
Keith Adrian Murray Walker - Los Altos Hills CA

Assignee:

Syntex (U.S.A.) LLC - Palo Alto CA
Agouron Pharmaceuticals, Inc. - La Jolla CA

International Classification:

A61K 31435

US Classification:

514292, 546 87

Abstract:

This invention relates to sulfamides of formula (I) that are inhibitors of metalloproteases, pharmaceutical compositions containing them, methods for their use and methods for preparing these compounds.

US Patent:

6456528, Sep 24, 2002

Filed:

Sep 17, 2001

Appl. No.:

09/956340

Inventors:

Jian Chen - San Jose CA

Assignee:

SanDisk Corporation - Sunnyvale CA

International Classification:

G11C 1604

US Classification:

36518503, 36518524

Abstract:

A flash non-volatile memory system that normally operates its memory cells in multiple storage states is provided with the ability to operate some selected or all of its memory cell blocks in two states instead. The two states are selected to be the furthest separated of the multiple states, thereby providing an increased margin during two state operation. This allows faster programming and a longer operational life of the memory cells being operated in two states when it is more desirable to have these advantages than the increased density of data storage that multi-state operation provides.

US Patent:

6463875, Oct 15, 2002

Filed:

Nov 15, 2000

Appl. No.:

09/711935

Inventors:

Jian J. Chen - Fremont CA
Robert G. Veltrop - Boise ID
Thomas E. Wicker - Reno NV

Assignee:

Lam Research Corporation - Fremont CA

International Classification:

H05H 146

US Classification:

118723I, 427569

Abstract:

A radio frequency plasma multiple-coil antenna allows for controllable, uniform inductive coupling within a plasma reactor. According to exemplary embodiments, multiple coils are positioned on a dielectric window of a plasma chamber, and are powered by a single radio frequency generator and tuned by a single matching network. Each coil is either planar or a combination of a planar coil and a vertically stacked helical coil. The input end of each coil is connected to an input tuning capacitor and the output end is terminated to the ground through an output tuning capacitor. The location of the maximum inductive coupling of the radio frequency to the plasma is mainly determined by the output capacitor, while the input capacitor is mainly used to adjust current magnitude into each coil. By adjusting the current magnitude and the location of the maximum inductive coupling within each coil, the plasma density in different radial and azimuthal regions can be varied and controlled, and therefore, radially and azimuthally uniform plasma can be achieved.

US Patent:

6492394, Dec 10, 2002

Filed:

Dec 22, 1999

Appl. No.:

09/469660

Inventors:

Chris Allen Broka - Foster City CA
Jeffrey Allen Campbell - Fremont CA
Jian Jeffrey Chen - Santa Clara CA
Sharon Marie Dankwardt - Foster City CA
Nancy Delaet - San Diego CA
Leslie Ann Robinson - Los Altos CA
Keith Adrian Murray Walker - Los Altos CA

Assignee:

Syntex (U.S.A.) LLC - Palo Alto CA

International Classification:

A61K 31445

US Classification:

514321, 5142275, 5142278, 5142282, 5142312, 5142338, 5142345, 5142352, 5142355, 514255, 514311, 514314, 514318, 514322, 514323, 514326, 514337, 514338, 514339, 514394, 514412, 514419, 514422, 514438, 514443, 514464, 544 584, 544124, 544128, 544139, 544143, 544153, 544159, 544363, 544370, 544373, 544377, 544386, 546193, 546197, 546199, 546201, 546229, 546264, 5462734, 5462774, 548495, 548517, 548518, 548561, 549 59, 549 75, 549 76, 549 77, 549440, 549448, 549452

Abstract:

A compound of the Formula (I): wherein Z, R , R, and Ar are as defined in the specification. This invention also relates to sulfonamide compounds of the Formula (I) that are inhibitors of procollagen C-proteinase, pharmaceutical compositions containing them, methods for their use, and methods for preparing the compounds.

US Patent:

6506749, Jan 14, 2003

Filed:

Aug 30, 2001

Appl. No.:

09/943407

Inventors:

Jian Jeffrey Chen - Santa Clara CA
James Patrick Dunn - Los Altos CA
David Michael Goldstein - San Jose CA
Julie Anne Lim - San Mateo CA

Assignee:

Syntex (U.S.A.) LLC - Palo Alto CA

International Classification:

C07D47104

US Classification:

5142342, 51426411, 544117, 544279

Abstract:

The present invention provides compounds of the formula: wherein R is substituted cycloalkyl, heterosubstituted cycloalkyl, heteroalkylsubstituted cycloalkyl, heterosubstituted cycloalkyl-alkyl, optionally substituted heterocyclyl, spiro-substituted cycloalkyl, aralkoxy, alkoxy, -alkylene-S(O) -alkyl (wherein n is 1 or 2), or âSO Ar ; and R , R , and Ar are those defined herein, and methods for preparation and uses thereof.

US Patent:

6518276, Feb 11, 2003

Filed:

Aug 30, 2001

Appl. No.:

09/943338

Inventors:

Humberto Bartolome Arzeno - Cupertino CA
Jian Jeffrey Chen - Santa Clara CA
James Patrick Dunn - Los Altos CA
David Michael Goldstein - San Jose CA
Julie Anne Lim - San Mateo CA

Assignee:

Syntex (U.S.A.) LLC - Palo Alto CA

International Classification:

A61K 31519

US Classification:

51426411, 544279

Abstract:

The present invention provides compounds of the formula: wherein R , R , and Ar are those defined herein, and R is âCRâRââR (where Râ and Râ are hydrogen, hydroxyalkyl or alkyl with at least one being alkyl or hydroxyalkyl and R is hydroxyalkyl), R âSâR â (where R is alkyl and R is alkylene), alkoxy-substituted alkyl, heterocyclylalkyl or C -C cycloalkyl, wherein each of the hydroxy group present in R can be independently R âC( O)âO, R R NâC( O)âO, or R âS(O) âOâ, wherein R and R are independently hydrogen, alkyl, aryl, or aralkyl, and methods for preparation and uses thereof.

US Patent:

6522580, Feb 18, 2003

Filed:

Jun 27, 2001

Appl. No.:

09/893277

Inventors:

Jian Chen - San Jose CA
Tomoharu Tanaka - Yokohama, JP
Yupin Fong - Fremont CA
Khandker N. Quader - Sunnyvale CA

Assignee:

SanDisk Corporation - Sunnyvale CA

International Classification:

G11C 1634

US Classification:

36518502, 36518522, 36518517, 36518503, 36518518, 36518519

Abstract:

A non-volatile memory system having an array of memory cells with at least one storage element each is operated with a plurality of storage level ranges per storage element. A flash electrically erasable and programmable read only memory (EEPROM) is an example, wherein the storage elements are electrically floating gates. The memory is operated to minimize the effect of charge coupled between adjacent floating gates, by programming some cells a second time after adjacent cells have been programmed. The second programming step also compacts a distribution of charge levels within at least some of the programming states. This increases the separation between states and/or allows more states to be included within a given storage window. An implementation that is described is for a NAND type of flash EEPROM.