Richard J. Zdrahala

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South Charleston, WV, US

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Patents Grantslast 30 patents

Information Patent Grant
Thermoplastic polyether polyurethane elastomers
- Patent number 4,190,711
- Issue date Feb 26, 1980
- Union Carbide Corporation
- Richard J. Zdrahala
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...