Wei Y 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:

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.