Hiromi Ishida

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Tochigi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rubber kneading method
- Patent number 4,840,491
- Issue date Jun 20, 1989
- Bridgestone Corporation
- Yoshiaki Hagiwara
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL