Robert G. Chen

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Composition and method of preparation of novel aqueous drilling flu...
- Patent number 4,521,578
- Issue date Jun 4, 1985
- Dresser Industries, Inc.
- Robert G. Chen
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...