Assignee
YAMADA YUKI SEIZO CO LTD
JP·7 granted patents·81 citations·filing 1975–1990
Top patents by PatentIndex Score
7 records- 0171US4817503ADiaphragm pump with pressure chamber having a ribbed wallYAMADA YUKI SEIZO CO LTD·Filed 1987·Granted Apr 4, 1989·26 cites·1 claims
- 0257US4923168ASpool type switching valve deviceYAMADA YUKI SEIZO CO LTD·Filed 1988·Granted May 8, 1990·16 cites·4 claims
- 0350US5002469ASwitching device for reciprocating pumpsYAMADA YUKI SEIZO CO LTD·Filed 1990·Granted Mar 26, 1991·16 cites·2 claims
- 0448US4188170ADiaphragm pumpYAMADA YUKI SEIZO CO LTD·Filed 1978·Granted Feb 12, 1980·10 cites·4 claims
- 0542US5002468ASwitching device for reciprocating pumpsYAMADA YUKI SEIZO CO LTD·Filed 1988·Granted Mar 26, 1991·8 cites·5 claims
- 0632US5120202ASwitching device for reciprocating pumpsYAMADA YUKI SEIZO CO LTD·Filed 1990·Granted Jun 9, 1992·4 cites·2 claims
- 0727US4011761AWheel balancerYAMADA YUKI SEIZO CO LTD·Filed 1975·Granted Mar 15, 1977·1 cites·10 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →