Assignee
CLARKSON CO
US·7 granted patents·399 citations·filing 1979–1997
Top patents by PatentIndex Score
7 records- 0193US4257447AGate valveCLARKSON CO·Filed 1979·Granted Mar 24, 1981·59 cites·18 claims
- 0290US5271426AGate valveCLARKSON CO·Filed 1992·Granted Dec 21, 1993·79 cites·50 claims
- 0389US4895181AGate valveCLARKSON CO·Filed 1988·Granted Jan 23, 1990·69 cites·19 claims
- 0488US5890700AGate valveCLARKSON CO·Filed 1997·Granted Apr 6, 1999·64 cites·9 claims
- 0588US4688597AGate valveCLARKSON CO·Filed 1986·Granted Aug 25, 1987·58 cites·10 claims
- 0675US5370149ALine blind valveCLARKSON CO·Filed 1993·Granted Dec 6, 1994·38 cites·16 claims
- 0774US4846442AGate valve with lock ringCLARKSON CO·Filed 1988·Granted Jul 11, 1989·32 cites·29 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →