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David B. Guthrie
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St. Louis, MO, US
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last 30 patents
Information
Patent Grant
Zinc oxide dispersions by decomposition of zinc acetate
Patent number
4,410,446
Issue date
Oct 18, 1983
Petrolite Corporation
William J. Cheng
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Low temperature process of preparing Mg(OH).sub.2 suspensions
Patent number
4,298,482
Issue date
Nov 3, 1981
Petrolite Corporation
William J. Cheng
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
MgO Dispensions
Patent number
4,293,429
Issue date
Oct 6, 1981
Petrolite Corporation
William J. Cheng
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Magnesium-containing dispersions
Patent number
4,229,309
Issue date
Oct 21, 1980
Petrolite Corporation
William J. Cheng
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Magnesium-containing dispersions by decomposition of MgCO.sub.3
Patent number
4,226,739
Issue date
Oct 7, 1980
Petrolite Corporation
William J. Cheng
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
ZnO dispersions by decomposition of ZnCO.sub.3
Patent number
4,193,769
Issue date
Mar 18, 1980
Petrolite Corporation
William J. Cheng
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Preparation of magnesium-containing dispersions from magnesium carb...
Patent number
4,179,383
Issue date
Dec 18, 1979
Petrolite Corporation
William J. Cheng
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
CaCO.sub.3 -containing dispersions
Patent number
4,164,472
Issue date
Aug 14, 1979
Petrolite Corporation
William J. Cheng
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Preparation of magnesium-containing dispersions from magnesium carb...
Patent number
4,163,728
Issue date
Aug 7, 1979
Petrolite Corporation
William J. Cheng
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Organic liquids containing anti-static agents which are copolymers...
Patent number
4,163,645
Issue date
Aug 7, 1979
Petrolite Corporation
William J. Cheng
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Clear, bright oil-soluble aluminum-containing compositions
Patent number
4,123,231
Issue date
Oct 31, 1978
Petrolite Corporation
David B. Guthrie
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Copolymers of alpha-olefins and maleic anhydride reacted with amine...
Patent number
4,121,026
Issue date
Oct 17, 1978
Petrolite Corporation
William J. Cheng
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...