Kenji Ishihara

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Nagoya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Self-closing gas pipes and pipe joints
- Patent number 4,267,853
- Issue date May 19, 1981
- Toho Gasu Kabushiki Daisha
- Yukio Yamaguchi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Method of making thermally expansible rubber tubes for use in self-...
- Patent number 4,229,341
- Issue date Oct 21, 1980
- Toho Gasu Kabushiki Kaisha
- Yukio Yamaguchi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL