Jerry D. Purkaple

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Ponca City, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Reducing the permeability of a rock formation
- Patent number 4,819,723
- Issue date Apr 11, 1989
- Conoco Inc.
- Donald L. Whitfill
- E21 - EARTH DRILLING MINING
Information Patent Grant
Reducing permeability of highly permeable zones in underground form...
- Patent number 4,773,481
- Issue date Sep 27, 1988
- Conoco Inc.
- Joe D. Allison
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...