Hellmut Hannes

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Leverkusen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the production of plastic films having improved optical...
- Patent number 4,614,634
- Issue date Sep 30, 1986
- Bayer Aktiengesellschaft
- Hans-Leo Weber
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Birefringence-free plastics
- Patent number 4,544,583
- Issue date Oct 1, 1985
- Bayer Aktiengesellschaft
- Uwe Claussen
- G02 - OPTICS