Michael Stephens

Person

Bartlesville, OK, US

People

Patents Grantslast 30 patents

Information Patent Grant
Low density well cement compositions and method of use
- Patent number 6,176,314
- Issue date Jan 23, 2001
- Phillips Petroleum Company
- Michael Stephens
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Cement composition and process therewith
- Patent number 6,124,383
- Issue date Sep 26, 2000
- Phillips Petroleum Company
- Michael L. Stephens
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Polymerization process
- Patent number 5,932,671
- Issue date Aug 3, 1999
- Phillips Petroleum Company
- Howard F. Efner
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Drilling mud comprising tetrapolymer consisting of n-vinyl-2-pyrrol...
- Patent number 5,380,705
- Issue date Jan 10, 1995
- Phillips Petroleum Company
- Michael Stephens
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Fluid loss additives for well cementing compositions
- Patent number 5,294,651
- Issue date Mar 15, 1994
- Phillips Petroleum Company
- Michael Stephens
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Tetrapolymerization product of 2-acrylamido-2-methyl propane sulfon...
- Patent number 5,260,391
- Issue date Nov 9, 1993
- Michael Stephens
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Fluid loss additives for well cementing compositions containing a t...
- Patent number 5,153,240
- Issue date Oct 6, 1992
- Phillips Petroleum Company
- Michael S. Stephens
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Drilling mud comprising tetrapolymer consisting of N-vinyl-2-pyrrol...
- Patent number 5,135,909
- Issue date Aug 4, 1992
- Phillips Petroleum Company
- Michael Stephens
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Fluid loss additive for cement slurries containing a n-vinyl-2-pyrr...
- Patent number 5,109,042
- Issue date Apr 28, 1992
- Phillips Petroleum Company
- Michael Stephens
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Well cement slurries and dispersants therefor
- Patent number 5,041,630
- Issue date Aug 20, 1991
- Phillips Petroleum Company
- Bharat Patel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Well cement slurries and dispersants therefor
- Patent number 4,923,516
- Issue date May 8, 1990
- Phillips Petroleum Company
- Bharat B. Patel
- C07 - ORGANIC CHEMISTRY

Michael Stephens

Person

Patents Grantslast 30 patents

Low density well cement compositions and method of use

Cement composition and process therewith

Polymerization process

Drilling mud comprising tetrapolymer consisting of n-vinyl-2-pyrrol...

Fluid loss additives for well cementing compositions

Tetrapolymerization product of 2-acrylamido-2-methyl propane sulfon...

Fluid loss additives for well cementing compositions containing a t...

Drilling mud comprising tetrapolymer consisting of N-vinyl-2-pyrrol...

Fluid loss additive for cement slurries containing a n-vinyl-2-pyrr...

Well cement slurries and dispersants therefor

Well cement slurries and dispersants therefor