Dennis John Simpkin

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Wantage, GB

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Patents Grantslast 30 patents

Information Patent Grant
Preparation of sulfurized phenol additives intermediates and compos...
- Patent number 6,245,724
- Issue date Jun 12, 2001
- Exxon Chemical Patents Inc.
- Philip Skinner
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of sulfurized phenol additives intermediates and compos...
- Patent number 5,827,806
- Issue date Oct 27, 1998
- Exxon Chemical Patents, Inc.
- Philip Skinner
- C07 - ORGANIC CHEMISTRY