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Sangya Jain
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Bridgewater, NJ, US
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last 30 patents
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Patent Grant
Image reversal negative working photoresist containing O-quinone di...
Patent number
5,399,456
Issue date
Mar 21, 1995
Hoechst Celanese Corporation
Mark A. Spak
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image reversal negative working O-naphthoquinone diazide and cross-...
Patent number
5,256,522
Issue date
Oct 26, 1993
Hoechst Celanese Corporation
Mark A. Spak
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photoresist article having a portable, conformable, built-on mask
Patent number
5,240,807
Issue date
Aug 31, 1993
Hoechst Celanese Corporation
Sangya Jain
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image reversal negative working o-quinone diazide and cross-linking...
Patent number
5,217,840
Issue date
Jun 8, 1993
Hoechst Celanese Corporation
Mark A. Spak
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method of producing an image reversal negative photoresist having a...
Patent number
5,019,488
Issue date
May 28, 1991
Hoechst Celanese Corporation
Donald C. Mammato
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image reversal negative working O-quinone diazide and cross-linking...
Patent number
4,931,381
Issue date
Jun 5, 1990
Hoechst Celanese Corporation
Mark A. Spak
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image reversal negative working O-napthoquinone diazide and cross-l...
Patent number
4,929,536
Issue date
May 29, 1990
Hoechst Celanese Corporation
Mark A. Spak
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Postive working multi-level photoresist
Patent number
4,863,827
Issue date
Sep 5, 1989
American Hoechst Corporation
Sangya Jain
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Polysulfone barrier layer for bi-level photoresists
Patent number
4,835,086
Issue date
May 30, 1989
Hoechst Celanese Corporation
Sangya Jain
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Light-sensitive trisester of O-quinone diazide containing compositi...
Patent number
4,588,670
Issue date
May 13, 1986
American Hoechst Corporation
Michael Kelly
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY