H. Franklin Lawson

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Downingtown, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Additives for water-base drilling fluid and process
- Patent number 4,797,450
- Issue date Jan 10, 1989
- ARCO Chemical Company
- David C. Dehm
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for sulfonating of polymers containing dicarboxylic acid cy...
- Patent number 4,644,035
- Issue date Feb 17, 1987
- Atlantic Richfield Company
- David C. Dehm
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for preparation of polymers containing dicarboxylic acid cy...
- Patent number 4,618,655
- Issue date Oct 21, 1986
- Atlantic Richfield Company
- David C. Dehm
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...