Yoshinobu Ishido

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Fukuyama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Aqueously-swelling water stopper and a process of stopping water th...
- Patent number 4,449,713
- Issue date May 22, 1984
- Hayakawa Rubber Company Limited
- Yoshinobu Ishido
- E04 - BUILDING
Information Patent Grant
Aqueously-swelling water stopper and a process of stopping water th...
- Patent number 4,443,019
- Issue date Apr 17, 1984
- Hayakawa Rubber Company Limited
- Yoshinobu Ishido
- E04 - BUILDING
Information Patent Grant
Aqueously-swelling water stopper and a process of stopping water th...
- Patent number 4,366,284
- Issue date Dec 28, 1982
- Hayakawa Rubber Company Limited
- Yoshinobu Ishido
- E04 - BUILDING