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Lyla M. El-Sayed
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Kennett Square, PA, US
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last 30 patents
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Patent Grant
Quaternary ammonium compound as charge adjuvants for positive elect...
Patent number
5,382,492
Issue date
Jan 17, 1995
Xerox Corporation
Lyla M. El-Sayed
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Salts of acid-containing AB diblock copolymers as charge directors...
Patent number
5,130,221
Issue date
Jul 14, 1992
DXImaging
Lyla M. El-Sayed
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Acid-containing A-B block copolymers as grinding aids in liquid ele...
Patent number
5,053,306
Issue date
Oct 1, 1991
E. I. Du Pont de Nemours and Company
Lyla M. El-Sayed
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
AB diblock copolymers as charge directors for negative electrostati...
Patent number
5,035,972
Issue date
Jul 30, 1991
E. I. Du Pont de Nemours and Company
Lyla M. El-Sayed
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Aromatic nitrogen-containing compounds as adjuvants for electrostat...
Patent number
5,009,980
Issue date
Apr 23, 1991
E. I. Du Pont de Nemours and Company
Lyla M. El-Sayed
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Substituted carboxylic acids as adjuvants for positive electrostati...
Patent number
5,002,848
Issue date
Mar 26, 1991
E. I. Du Pont de Nemours and Company
Lyla M. El-Sayed
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Bipolar liquid electrostatic developer
Patent number
4,985,329
Issue date
Jan 15, 1991
E. I. Du Pont de Nemours and Company
Lyla M. El-Sayed
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Alkylhydroxy benzylpolyamine as adjuvant for electrostatic liquid d...
Patent number
4,977,056
Issue date
Dec 11, 1990
E. I. Du Pont de Nemours and Company
Lyla M. El-Sayed
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Monofunctional amines as adjuvant for liquid electrostatic developers
Patent number
4,935,328
Issue date
Jun 19, 1990
E. I. Du Pont de Nemours and Company
Lyla M. El-Sayed
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Organic sulfur-containing compounds as adjuvants for positive elect...
Patent number
4,917,985
Issue date
Apr 17, 1990
E. I. Du Pont de Nemours and Company
Lyla M. El-Sayed
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Glycerides as charge directors for liquid electrostatic developers
Patent number
4,886,726
Issue date
Dec 12, 1989
E. I. Du Pont de Nemours and Company
Dominic M. Chan
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Modified liquid electrostatic developer having improved image scrat...
Patent number
4,820,605
Issue date
Apr 11, 1989
E. I. Du Pont de Nemours and Company
Lyla M. El-Sayed
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Quaternaryammonium hydroxide as adjuvant for liquid electrostatic d...
Patent number
4,783,388
Issue date
Nov 8, 1988
E. I. Du Pont de Nemours and Company
Lyla M. El-Sayed
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Inorganic metal salt as adjuvant for negative liquid electrostatic...
Patent number
4,780,389
Issue date
Oct 25, 1988
E. I. Du Pont de Nemours and Company
Lyla M. El-Sayed
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Inorganic metal salt as adjuvant for negative liquid electrostatic...
Patent number
4,758,494
Issue date
Jul 19, 1988
E. I. Du Pont de Nemours and Company
Lyla M. El-Sayed
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Polybutylene succinimide as adjuvant for electrostatic liquid devel...
Patent number
4,702,984
Issue date
Oct 27, 1987
E. I. DuPont de Nemours and Company
Lyla M. El-Sayed
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY