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Thomas R. Sifferman
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Ponca City, OK, US
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last 30 patents
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Patent Grant
Methods of inhibiting the flow of water in subterranean formations
Patent number
4,418,755
Issue date
Dec 6, 1983
Conoco Inc.
Thomas R. Sifferman
E21 - EARTH DRILLING MINING
Information
Patent Grant
Methods of inhibiting the flow of water in subterranean formations
Patent number
4,412,586
Issue date
Nov 1, 1983
Conoco Inc.
Thomas R. Sifferman
E21 - EARTH DRILLING MINING
Information
Patent Grant
Control of incompetent formations with thickened acid-settable resi...
Patent number
4,110,275
Issue date
Aug 29, 1978
Continental Oil Company
Thomas R. Sifferman
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Control of incompetent formations with thickened compositions conta...
Patent number
4,105,618
Issue date
Aug 8, 1978
Continental Oil Company
Thomas R. Sifferman
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Use of thickened oil for sand control processes
Patent number
4,085,802
Issue date
Apr 25, 1978
Continental Oil Company
Thomas R. Sifferman
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Control of incompetent formations with thickened acid-settable resi...
Patent number
4,085,801
Issue date
Apr 25, 1978
Continental Oil Company
Thomas R. Sifferman
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...