Inventor · disambiguated record
Ryozo Ariizumi
Also filed as: ARIIZUMI RYOZO
8 granted patents·207 citations·filing 1986–2004
88Inventor score
Top patents by PatentIndex Score
8 records- 0189US4840347APneumatically-operated valveFUJIKURA RUBBER LTD·Filed 1988·Granted Jun 20, 1989·59 cites·11 claims
- 0287US4712576APneumatically operated valveFUJIKURA RUBBER LTD·Filed 1986·Granted Dec 15, 1987·50 cites·18 claims
- 0382US4765370ADirectional control valveFUJIKURA RUBBER LTD·Filed 1986·Granted Aug 23, 1988·45 cites·9 claims
- 0469US4903939APneumatically-operated valveFUJIKURA RUBBER LTD·Filed 1989·Granted Feb 27, 1990·27 cites·15 claims
- 0567US4744388ADiaphragm type of pilot operated directional control valveFUJIKURA RUBBER LTD·Filed 1987·Granted May 17, 1988·19 cites·16 claims
- 0645US4875500ADiaphragm type of pilot operated directional control valveFUJIKURA RUBBER LTD·Filed 1988·Granted Oct 24, 1989·6 cites·2 claims
- 0733US7464544B2Pressure deviceKOGANEI LTD·Filed 2004·Granted Dec 16, 2008·0 cites·6 claims
- 0828US4823834ADiaphragm type of pilot operated directional control valveFUJIKURA RUBBER LTD·Filed 1988·Granted Apr 25, 1989·1 cites·3 claims
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