Assignee
KOIWA YOSHINOBU
JP·3 granted patents·116 citations·filing 1988–1990
Top patents by PatentIndex Score
3 records- 0190US4948349APump and valve apparatusKOIWA YOSHINOBU·Filed 1988·Granted Aug 14, 1990·90 cites·12 claims
- 0247US5035261APump and valve apparatusKOIWA YOSHINOBU·Filed 1990·Granted Jul 30, 1991·13 cites·48 claims
- 0344US5026216AShaft construction methodKOIWA YOSHINOBU·Filed 1989·Granted Jun 25, 1991·13 cites·5 claims
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