Yutaka Tamaoka

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Akashi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of producing microporous films
- Patent number 4,191,623
- Issue date Mar 4, 1980
- Honny Chemicals Company, Limited
- Kuniyuki Hayasaka
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Simulated leather materials and electrolytic process for making them
- Patent number 4,145,266
- Issue date Mar 20, 1979
- Honny Chemicals Co., Ltd.
- Kuniyuki Hayasaka
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...