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Craig A. Stevens
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Houston, TX, US
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last 30 patents
Information
Patent Grant
Concurrent epoxidation and catalyst residue extraction
Patent number
5,543,472
Issue date
Aug 6, 1996
Shell Oil Company
Craig A. Stevens
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Star polymer viscosity index improver for oil compositions
Patent number
5,460,739
Issue date
Oct 24, 1995
Shell Oil Company
Robert B. Rhodes
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Star polymer viscosity index improver for oil compositions
Patent number
5,458,791
Issue date
Oct 17, 1995
Shell Oil Company
Robert B. Rhodes
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Asymmetric triblock copolymer viscosity index improver for oil comp...
Patent number
5,458,792
Issue date
Oct 17, 1995
Shell Oil Company
Robert B. Rhodes
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Butadiene polymers having terminal functional groups
Patent number
5,405,911
Issue date
Apr 11, 1995
Shell Oil Company
Dale L. Handlin
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Butadiene polymers having terminal functional groups
Patent number
5,393,843
Issue date
Feb 28, 1995
Shell Oil Company
Dale L. Handlin
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for producing coupled asymmetric polymers
Patent number
5,360,875
Issue date
Nov 1, 1994
Shell Oil Company
Michael A. Masse
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Termination of anionic polymerization using hydrocarbon terminating...
Patent number
5,194,530
Issue date
Mar 16, 1993
Shell Oil Company
Craig A. Stevens
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Termination of anionic polymerization
Patent number
5,151,475
Issue date
Sep 29, 1992
Shell Oil Company
Craig A. Stevens
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...