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Donald M. Leiendecker
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St. Louis, MO, US
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Patents Grants
last 30 patents
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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
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Patent Grant
Oil solutions and/or dispersions of hydrated chromium oxides
Patent number
4,263,151
Issue date
Apr 21, 1981
Petrolite Corporation
William J. Cheng
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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...