Inventor · disambiguated record
Alan K. Forsythe
Also filed as: FORSYTHE ALAN K
21 granted patents·1,642 citations·filing 1975–2004
96Inventor score
Top patents by PatentIndex Score
21 records- 0196US6175290B1Contactless stalk mounted control switchGT DEV CORP·Filed 1999·Granted Jan 16, 2001·1.2k cites·18 claims
- 0292US5027868AVapor recovery systemsGT DEV CORP·Filed 1988·Granted Jul 2, 1991·66 cites·14 claims
- 0386US5564520APneumatic seat rollover vent valveGT DEV CORP·Filed 1994·Granted Oct 15, 1996·58 cites·32 claims
- 0481US7106158B2Solenoid-actuated air valveG T DEV CORP·Filed 2004·Granted Sep 12, 2006·25 cites·19 claims
- 0578US6719000B1Two stage fuel tank vent valveG T DEV CORP·Filed 2002·Granted Apr 13, 2004·32 cites·15 claims
- 0675US5287841AFlow divider and utilization systemGT DEV CORP·Filed 1993·Granted Feb 22, 1994·23 cites·23 claims
- 0771US4524951ACenter-position biased slide valveGT DEV CORP·Filed 1981·Granted Jun 25, 1985·24 cites·22 claims
- 0870US5325882APressure and thermal relief valve for fuel tankGT DEV CORP·Filed 1988·Granted Jul 5, 1994·26 cites·36 claims
- 0966US6085786ACyclic flow valveGT DEV CORP·Filed 1998·Granted Jul 11, 2000·24 cites·27 claims
- 1065US5111837APressure/thermal relief valve for fuel tankGT DEV CORP·Filed 1991·Granted May 12, 1992·28 cites·14 claims
- 1165US5027844APressure and thermal relief valve for fuel tankGT DEV CORP·Filed 1990·Granted Jul 2, 1991·26 cites·2 claims
- 1258US4708053AReciprocating piston fluid powered motorSPRAGUE DEVICES INC·Filed 1985·Granted Nov 24, 1987·18 cites·4 claims
- 1358US4287906AControl valveSPRAGUE DEVICES INC·Filed 1980·Granted Sep 8, 1981·15 cites·12 claims
- 1454US7380309B2Knob attachment assemblyGT DEV CORP·Filed 2003·Granted Jun 3, 2008·4 cites·33 claims
- 1554US4303088APneumatic valve and regulator assemblySPRAGUE DEVICES INC·Filed 1979·Granted Dec 1, 1981·11 cites·7 claims
- 1652US4048455APressure switch with plural axes pivoted conduction plateRED DOT CORP·Filed 1976·Granted Sep 13, 1977·7 cites·12 claims
- 1749US7164335B2Switch assembly employing magnetic reed switchesG T DEV CORP·Filed 2003·Granted Jan 16, 2007·5 cites·8 claims
- 1841US7210669B1Deformable fastenerGT DEV CORP·Filed 2004·Granted May 1, 2007·2 cites·20 claims
- 1940US6860292B2Control system for air-operated devicesGT DEV·Filed 2003·Granted Mar 1, 2005·5 cites·16 claims
- 2038US3972116AShearHAZLETON LAB CORP·Filed 1975·Granted Aug 3, 1976·6 cites·12 claims
- 2127US4632013AReciprocating piston fluid powered motorSPRAGUE DEVICES INC·Filed 1984·Granted Dec 30, 1986·1 cites·7 claims
Join the waitlist — get patent alerts
Get an alert when Alan K. Forsythe files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →