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John E. Halko
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Okarche, OK, US
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last 30 patents
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Patent Grant
Titanium dioxide pigments
Patent number
6,139,617
Issue date
Oct 31, 2000
Kerr-McGee Chemical LLC
John E. Halko
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Pigment process for durable pigments
Patent number
5,976,237
Issue date
Nov 2, 1999
Kerr-McGee Chemical Corporation
John E. Halko
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing an improved low-dusting, free-flowing pigment
Patent number
5,908,498
Issue date
Jun 1, 1999
Kerr-McGee Chemical LLC
James W. Kauffman
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing an improved low-dusting, free-flowing pigment
Patent number
5,733,365
Issue date
Mar 31, 1998
Kerr-McGee Corporation
John E. Halko
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Titanium dioxide dispersibility
Patent number
5,332,433
Issue date
Jul 26, 1994
Kerr-McGee Chemical Corporation
Phillip Story
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process for concentration of slurries comprising insoluble coal pro...
Patent number
4,406,663
Issue date
Sep 27, 1983
Kerr-McGee Corporation
Roger A. Baldwin
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...