Dai Yokoyama

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Porous polyimide membrane and process for production thereof
- Patent number 8,980,421
- Issue date Mar 17, 2015
- UBE Industries, Ltd.
- Shyusei Ohya
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
POROUS POLYIMIDE MEMBRANE AND PROCESS FOR PRODUCTION THEREOF
- Publication number 20130045355
- Publication date Feb 21, 2013
- Ube Industries, Ltd.
- Shyusei Ohya
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL