Edward W. Heffern

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Tulsa, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Process for water injectivity improvement treatment of water inject...
- Patent number 4,690,217
- Issue date Sep 1, 1987
- Amoco Corporation
- Davis L. Taggart
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Method of preparing overbased magnesium sulfonates
- Patent number 4,201,682
- Issue date May 6, 1980
- Standard Oil Company (Indiana)
- Albert R. Sabol
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of alkenyl sulfonates
- Patent number 3,954,849
- Issue date May 4, 1976
- Standard Oil Company
- Robert E. Karll
- C07 - ORGANIC CHEMISTRY