Assignee
BENKAN CORP
JP·14 granted patents·1 pending application·1,089 citations·filing 1989–2016
Top patents by PatentIndex Score
15 records- 0198US6321780B1Valve for controlling flow rate of gasBENKAN CORP·Filed 2000·Granted Nov 27, 2001·420 cites·8 claims
- 0293US5678595AVacuum exhaust valveBENKAN CORP·Filed 1995·Granted Oct 21, 1997·79 cites·4 claims
- 0387US5755255AGate valve for regulating gas flow in semiconductor manufacturingBENKAN CORP·Filed 1997·Granted May 26, 1998·69 cites·4 claims
- 0486US5752548ACoupling for drainage pipingsBENKAN CORP·Filed 1996·Granted May 19, 1998·85 cites·2 claims
- 0585US6012479AIntegrated gas control deviceBENKAN CORP·Filed 1998·Granted Jan 11, 2000·56 cites·19 claims
- 0684US6216739B1Integrated gas control deviceBENKAN CORP·Filed 2000·Granted Apr 17, 2001·32 cites·9 claims
- 0784US5108069AMetal diaphragm valveBENKAN CORP·Filed 1991·Granted Apr 28, 1992·73 cites·8 claims
- 0882US5112027AMetal diaphragm valveBENKAN CORP·Filed 1990·Granted May 12, 1992·61 cites·2 claims
- 0979US5658021APipe jointBENKAN CORP·Filed 1995·Granted Aug 19, 1997·57 cites·5 claims
- 1076US5326078AMetal diaphragm valveBENKAN CORP·Filed 1993·Granted Jul 5, 1994·42 cites·3 claims
- 1174US4998754ADrainpipe jointBENKAN CORP·Filed 1989·Granted Mar 12, 1991·43 cites·2 claims
- 1263US5295660AMetal diaphragm valve with lock mechanismBENKAN CORP·Filed 1993·Granted Mar 22, 1994·27 cites·1 claims
- 1359US5390895ASlow vent valveBENKAN CORP·Filed 1994·Granted Feb 21, 1995·22 cites·1 claims
- 1453US6073646AGas controlling device for integrationBENKAN CORP·Filed 1997·Granted Jun 13, 2000·23 cites·10 claims
- 1547US2018056208A1Assembly toyBENKAN CORP·Filed 2016·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →