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Dinesh N. Khanna
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West Warwick, Kent, RI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Composition for stripping photoresist and organic materials from su...
Patent number
6,368,421
Issue date
Apr 9, 2002
Clariant Finance (BVI) Limited
Joseph E. Oberlander
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method for synthesizing polymeric AZO dyes
Patent number
6,346,361
Issue date
Feb 12, 2002
Clariant Finance (BVI) Limited
Jianhui Shan
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Antireflective coating for photoresist compositions
Patent number
6,187,506
Issue date
Feb 13, 2001
Clariant Finance (BVI) Limited
Shuji Ding
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Antireflective coating material for photoresists
Patent number
6,106,995
Issue date
Aug 22, 2000
Clariant Finance (BVI) Limited
Sunit S. Dixit
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Antireflective coating compositions for photoresist compositions an...
Patent number
5,994,430
Issue date
Nov 30, 1999
Clariant Finance BVI) Limited
Shuji Ding
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Light absorbing polymers
Patent number
5,981,145
Issue date
Nov 9, 1999
Clariant Finance (BVI) Limited
Shuji Ding
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Fractionation of phenol formaldehyde condensate and photoresist com...
Patent number
5,976,761
Issue date
Nov 2, 1999
Clariant Finance (BVI) Limited
M. Dalil Rahman
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Positive photoresists containing novel photoactive compounds
Patent number
5,876,897
Issue date
Mar 2, 1999
Clariant Finance (BVI) Limited
Dana L. Durham
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photosensitive quinolone compounds and a process of preparation
Patent number
5,866,295
Issue date
Feb 2, 1999
Clariant Finance (BVI) Limited
Joseph E. Oberlander
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Image formation utilizing photosensitive compositions containing lo...
Patent number
5,858,627
Issue date
Jan 12, 1999
Clariant Finance (BVI) Limited
M. Dalil Rahman
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Quinonediazide positive photoresist utilizing mixed solvent consist...
Patent number
5,853,947
Issue date
Dec 29, 1998
Clariant Finance (BVI) Limited
Stanley F. Wanat
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Quinone diazide compositions containing low metals p-cresol oligome...
Patent number
5,837,417
Issue date
Nov 17, 1998
Clariant Finance (BVI) Limited
M. Dalil Rahman
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Light sensitive composition containing an arylhydrazo dye
Patent number
5,763,135
Issue date
Jun 9, 1998
Clariant Finance (BVI) Limited
Shuji Ding
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Fractionation of phenol formaldehyde condensate and photoresist com...
Patent number
5,739,265
Issue date
Apr 14, 1998
Clariant Finance (BVI) Ltd.
M. Dalil Rahman
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Antireflective coating for photoresist compositions
Patent number
5,733,714
Issue date
Mar 31, 1998
Clariant Finance (BVI) Limited
Iain McCulloch
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Fractionation of phenol formaldehyde condensate and photoresist com...
Patent number
5,693,749
Issue date
Dec 2, 1997
Hoechst Celanese Corporation
M. Dalil Rahman
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Aqueous antireflective coatings for photoresist compositions
Patent number
5,652,297
Issue date
Jul 29, 1997
Hoechst Celanese Corporation
Iain McCulloch
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Metal ion reduction in novolak resin using an ion exchange catalyst...
Patent number
5,521,052
Issue date
May 28, 1996
Hoechst Celanese Corporation
M. Dalil Rahman
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process of making a stable solution of poly(hydroxystyrene) functio...
Patent number
5,395,871
Issue date
Mar 7, 1995
Hoechst Celanese Corporation
Dinesh N. Khanna
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Novolak resin mixtures
Patent number
5,371,169
Issue date
Dec 6, 1994
Hoechst Celanese Corporation
Ping H. Lu
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for producing positive photoresist image utilizing diazo est...
Patent number
5,348,842
Issue date
Sep 20, 1994
Hoechst Celanese Corporation
Dinesh N. Khanna
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process of making naphthoquinone diazide esters using lactone solvents
Patent number
5,300,396
Issue date
Apr 5, 1994
Hoechst Celanese Corporation
Dinesh N. Khanna
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photosensitizer compositions containing diazo fluorinated esters of...
Patent number
5,260,162
Issue date
Nov 9, 1993
Dinesh N. Khanna
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Polyamide containing the hexafluoroisopropylidene group and process...
Patent number
5,240,819
Issue date
Aug 31, 1993
Hoechst Celanese Corporation
Werner H. Mueller
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Diazo ester of a benzolactone ring compound and positive photoresis...
Patent number
5,221,592
Issue date
Jun 22, 1993
Hoechst Celanese Corporation
Dinesh N. Khanna
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Bis-N,N' nitro or amino benzoyl amino phenols
Patent number
5,130,481
Issue date
Jul 14, 1992
Hoechst Celanese Corporation
Dinesh N. Khanna
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Base developable negative acting photoresists
Patent number
5,106,720
Issue date
Apr 21, 1992
Hoechst Celanese Corporation
Werner H. Mueller
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Crosslinkable polyimides from bis (aminophenoxy) benzonitriles
Patent number
5,101,005
Issue date
Mar 31, 1992
Hoechst Celanese Corp.
Rohitkumar H. Vora
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyamide containing the hexafluoroisopropylidene group
Patent number
5,077,378
Issue date
Dec 31, 1991
Hoechst Celanese Corporation
Werner H. Mueller
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyamide-polyimide and polybenzoxazole-polyimide polymer
Patent number
5,071,948
Issue date
Dec 10, 1991
Hoechst Celanese Corporation
Dinesh N. Khanna
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Information
Patent Application
Method for synthesizing polymeric azo dyes
Publication number
20020061473
Publication date
May 23, 2002
Jianhui Shan
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...