Patricia C. Matthews

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Additive composition for release of stuck drill pipe
- Patent number 4,464,269
- Issue date Aug 7, 1984
- Exxon Research and Engineering Co.
- Thad O. Walker
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Additive composition for release of stuck drill pipe
- Patent number 4,436,638
- Issue date Mar 13, 1984
- Exxon Research and Engineering Co.
- Thad O. Walker
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Additive composition for release of stuck drill pipe
- Patent number 4,427,564
- Issue date Jan 24, 1984
- Exxon Research and Engineering Co.
- Darrell W. Brownawell
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...