Assignee
GRISWOLD CONTROLS
US·14 granted patents·533 citations·filing 1979–2006
Top patents by PatentIndex Score
14 records- 0195US7335313B2Dual stage centrifugal liquid-solids separatorGRISWOLD CONTROLS·Filed 2006·Granted Feb 26, 2008·41 cites·33 claims
- 0292US5230366AAutomatic fluid flow control deviceGRISWOLD CONTROLS·Filed 1992·Granted Jul 27, 1993·75 cites·6 claims
- 0392US4244392ABackflow prevention apparatusGRISWOLD CONTROLS·Filed 1979·Granted Jan 13, 1981·55 cites·4 claims
- 0491US5433243AFluid flow control device and methodGRISWOLD CONTROLS·Filed 1994·Granted Jul 18, 1995·71 cites·14 claims
- 0588US7025890B2Dual stage centrifugal liquid-solids separatorGRISWOLD CONTROLS·Filed 2003·Granted Apr 11, 2006·45 cites·19 claims
- 0679US7097766B2Sand filter with rotating vanesGRISWOLD CONTROLS·Filed 2003·Granted Aug 29, 2006·28 cites·9 claims
- 0778US4276897ABackflow prevention apparatusGRISWOLD CONTROLS·Filed 1980·Granted Jul 7, 1981·40 cites·17 claims
- 0877US4244395ACheck valve assemblyGRISWOLD CONTROLS·Filed 1979·Granted Jan 13, 1981·27 cites·1 claims
- 0971US5406974AAutomatic fluid flow control and strainer deviceGRISWOLD CONTROLS·Filed 1994·Granted Apr 18, 1995·34 cites·13 claims
- 1068US4452272ACheck valveGRISWOLD CONTROLS·Filed 1981·Granted Jun 5, 1984·27 cites·3 claims
- 1167US4333495ACheck valve assemblyGRISWOLD CONTROLS·Filed 1980·Granted Jun 8, 1982·24 cites·2 claims
- 1262US5301710AAutomatic fluid flow control device, system and methodGRISWOLD CONTROLS·Filed 1993·Granted Apr 12, 1994·21 cites·5 claims
- 1360US5635068ACombination centrifugal separator for air and solidsGRISWOLD CONTROLS·Filed 1995·Granted Jun 3, 1997·27 cites·20 claims
- 1459US4364408ABackflow prevention apparatusGRISWOLD CONTROLS·Filed 1980·Granted Dec 21, 1982·18 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when GRISWOLD CONTROLS files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →