Ryouichi Tsukada

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Fukuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Flush toilet bowl
- Patent number 5,918,325
- Issue date Jul 6, 1999
- Toto, Ltd.
- Kinya Arita
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Siphon-jet flush water supply system for toilet stool
- Patent number 5,502,845
- Issue date Apr 2, 1996
- Toto Ltd.
- Ryosuke Hayashi
- E03 - WATER SUPPLY SEWERAGE