Wei Chih Tang

US Patent:

62188917, Apr 17, 2001

Filed:

Jul 28, 2000

Appl. No.:

9/628266

Inventors:

Ashraf W. Lotfi - Bridgewater NJ
Allen F. Rozman - Richardson TX
Jian Tan - Bridgewater NJ
Wei Tang - Plano TX

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

H03K 17687

US Classification:

327431

Abstract:

An integrated circuit including a metal-semiconductor field-effect transistor (MESFET) having a nominal intrinsic capacitance and requiring a negative voltage to bias the MESFET into a non-conduction state, a method of driving the MESFET and a power converter employing the integrated circuit and method. In one embodiment, the integrated circuit includes a driver including a bias capacitor integrated with the MESFET. The driver is configured to apply a positive voltage to bias the MESFET into a conduction state, and apply the negative voltage to bias the MESFET into the non-conduction state without employing an external negative bias source.

US Patent:

20200325086, Oct 15, 2020

Filed:

Feb 22, 2017

Appl. No.:

16/073494

Inventors:

- Baytown TX, US
Lorenzo C. Decaul - Langhorne PA, US
Michael P. Lanci - Flemington NJ, US
Wei Tang - New York NY, US

International Classification:

C07C 5/367
C07C 15/14
C07C 13/28
C07C 5/10

Abstract:

In a process for producing a methyl-substituted biphenyl compound, at least one methyl-substituted cyclohexylbenzene compound of the formula:wherein each of m and n is independently 1, 2, or 3, is contacted with hydrogen in the presence of a hydrogenation catalyst to produce a hydrogenation reaction product comprising at least one methyl-substituted bicyclohexane compound, and the methyl-substituted bicyclohexane compound is then contacted with a dehydrogenation catalyst to produce a dehydrogenation reaction product comprising at least one methyl-substituted biphenyl compound.

US Patent:

20150126655, May 7, 2015

Filed:

Nov 1, 2013

Appl. No.:

14/069848

Inventors:

- Annandale NJ, US
WEI TANG - New York NY, US
CHRISTINE A. COSTELLO - Easton PA, US
PIERRE J. OSTERRIETH - Bruxelles, BE
DIANA S. SMIRNOVA - High Bridge NJ, US
STEPHEN ZUSHMA - Clinton NJ, US
CATHERINE ANNE FALER - Houston TX, US

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

C08K 5/11
C07C 67/11
C07C 67/08
C07C 69/604

US Classification:

524287, 106505, 560146

Abstract:

An asymmetric diester of catechol having different alkyl groups in each ester moiety. The asymmetric diester can have a first ester moiety of 8 carbon atoms and a second ester moiety of 10 carbon atoms, and a chemical formula as follows:wherein Ris CHand Ris CH, and finds use as a plasticizer compound for polymer compositions.

US Patent:

20140275605, Sep 18, 2014

Filed:

Mar 7, 2014

Appl. No.:

14/201224

Inventors:

- Baytown TX, US
Lorenzo C. DeCaul - Langhorne PA, US
Wei Tang - Houston TX, US

International Classification:

C08K 5/12
C07C 13/28
C07C 15/14
C07C 63/331

US Classification:

560 76, 562488, 585 25, 585268, 585252

Abstract:

A composition is described comprising a mixture of (methylcyclohexyl)toluene isomers having the following formula:wherein the mixture comprises at least 50 wt % in total of the 3,3, 3,4 4,3 and 4,4-isomers of (methylcyclohexyl)toluene.