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John L. Haack
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Pittsford, NY, US
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last 30 patents
Information
Patent Grant
Computer-aided chemical illustration system
Patent number
5,461,580
Issue date
Oct 24, 1995
Xerox Corporation
John S. Facci
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Process for quaternary ammonium bisulfates
Patent number
5,308,363
Issue date
May 3, 1994
Xerox Corporation
George Liebermann
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Toner and processes thereof
Patent number
5,288,580
Issue date
Feb 22, 1994
Xerox Corporation
Paul C. Julien
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner and developer compositions with charge enhancing additives
Patent number
5,114,821
Issue date
May 19, 1992
Xerox Corporation
John L. Haack
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Toner and developer compositions with charge enhancing additives
Patent number
5,045,423
Issue date
Sep 3, 1991
Xerox Corporation
Joseph R. Weber
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner compositions with negative charge enhancing additives
Patent number
4,939,061
Issue date
Jul 3, 1990
Xerox Corporation
John L. Haack
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner and developer compositions with charge enhancing additives
Patent number
4,937,157
Issue date
Jun 26, 1990
Xerox Corporation
John L. Haack
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner compositions with organo boron negative charge enhancing addi...
Patent number
4,898,802
Issue date
Feb 6, 1990
Xerox Corporation
Bing R. Hsieh
C07 - ORGANIC CHEMISTRY