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David M. Marquis
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Lafayette, CA, US
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last 30 patents
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Patent Grant
Enhanced oil recovery technique employing nonionic surfactants
Patent number
5,363,915
Issue date
Nov 15, 1994
Chevron Research and Technology Company
David M. Marquis
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Method of enhancing recovery of petroleum from an oil-bearing forma...
Patent number
5,076,357
Issue date
Dec 31, 1991
Chevron Research and Technology Company
David M. Marquis
E21 - EARTH DRILLING MINING
Information
Patent Grant
Nitration process for the preparation of 2,6-dialkylaniline
Patent number
4,340,758
Issue date
Jul 20, 1982
Chevron Research Company
Seymour J. Lapporte
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Maleic anhydride production with recycle treatment
Patent number
4,259,246
Issue date
Mar 31, 1981
Chevron Research Company
Kiran R. Bakshi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Maleic anhydride production
Patent number
4,231,943
Issue date
Nov 4, 1980
Chevron Research Company
Stephen G. Paradis
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for preparing maleic anhydride
Patent number
4,187,235
Issue date
Feb 5, 1980
Chevron Research Company
Kiyoshi Katsumoto
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method of preparing vanadium (IV) phosphate composition with high i...
Patent number
4,132,670
Issue date
Jan 2, 1979
Chevron Research Company
Kiyoshi Katsumoto
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Anhydride separation process
Patent number
4,071,540
Issue date
Jan 31, 1978
Chevron Research Company
David M. Marquis
C07 - ORGANIC CHEMISTRY