Eckehard Weigand

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Kobe, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for manufacturing rigid polyurethane foam
- Patent number 4,853,417
- Issue date Aug 1, 1989
- Sumitomo Bayer Urethane Co., Ltd.
- Eckehard Weigand
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...