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John W. Swirczewski
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Kintnersville, PA, US
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Patents Grants
last 30 patents
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Patent Grant
Polysubstituted fullerenes and their preparation (C-2608)
Patent number
5,416,188
Issue date
May 16, 1995
Exxon Research and Engineering Co.
Long Y. Chiang
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Polysubstituted fullerenes and their preparation
Patent number
5,294,732
Issue date
Mar 15, 1994
Exxon Research and Engineering Co.
Long Y. Chiang
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process of forming polysubstituted fullerenes
Patent number
5,177,248
Issue date
Jan 5, 1993
Exxon Research and Engineering Company
Long Y. Chiang
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Quaternary salts of polymers having repeating quinoxaline moieties
Patent number
5,175,221
Issue date
Dec 29, 1992
Exxon Research and Engineering Company
Long Y. Chiang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Synthesis of quinoline and substituted quinoline copolymers
Patent number
5,162,495
Issue date
Nov 10, 1992
Exxon Research and Engineering Company
Long Y. Chiang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyquinoxaline and the method of preparation
Patent number
5,149,773
Issue date
Sep 22, 1992
Exxon Research and Engineering Company
Long Y. Chiang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for polymering aromatic heterocyclic compounds
Patent number
4,981,949
Issue date
Jan 1, 1991
Exxon Research and Engineering Company
Long Y. Chiang
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Organic nitrogen-containing metal sulfide compositions, their prepa...
Patent number
4,971,938
Issue date
Nov 20, 1990
Exxon Research and Engineering Company
Long Y. Chiang
C07 - ORGANIC CHEMISTRY