Assignee
WEATHERHEAD CO
28 granted patents·700 citations·filing 1973–1977
Top patents by PatentIndex Score
28 records- 0194US4063760AQuick connect couplingWEATHERHEAD CO·Filed 1976·Granted Dec 20, 1977·98 cites·8 claims
- 0293US4005724ATilt responsive valveWEATHERHEAD CO·Filed 1975·Granted Feb 1, 1977·84 cites·10 claims
- 0392US4054156AExhaust brake valveWEATHERHEAD CO·Filed 1975·Granted Oct 18, 1977·60 cites·19 claims
- 0485US4034592ACrimping machine with automatic hinge open pushersWEATHERHEAD CO·Filed 1976·Granted Jul 12, 1977·39 cites·32 claims
- 0580US4106689ADisposable centrifugal separatorWEATHERHEAD CO·Filed 1977·Granted Aug 15, 1978·61 cites·8 claims
- 0677US4034593ACrimping machine with automatic swing open pushersWEATHERHEAD CO·Filed 1976·Granted Jul 12, 1977·27 cites·16 claims
- 0777US3948481ADraincock for automotive cooling systemWEATHERHEAD CO·Filed 1974·Granted Apr 6, 1976·42 cites·1 claims
- 0875US4007593AMotor vehicle open center series hydraulic circuitWEATHERHEAD CO·Filed 1975·Granted Feb 15, 1977·15 cites·5 claims
- 0975US3984132ABulkhead fittingWEATHERHEAD CO·Filed 1975·Granted Oct 5, 1976·38 cites·5 claims
- 1074US3945686ABlend back proportioning valveWEATHERHEAD CO·Filed 1973·Granted Mar 23, 1976·26 cites·3 claims
- 1171US3954121AVent check valveWEATHERHEAD CO·Filed 1975·Granted May 4, 1976·35 cites·8 claims
- 1270US3988967ABrake booster with hydraulic ratio changerWEATHERHEAD CO·Filed 1975·Granted Nov 2, 1976·12 cites·19 claims
- 1369US4007665ABrake booster with improved pedal feel characteristicsWEATHERHEAD CO·Filed 1975·Granted Feb 15, 1977·12 cites·16 claims
- 1468US4087972ABrake booster with spring type ratio changerWEATHERHEAD CO·Filed 1976·Granted May 9, 1978·11 cites·5 claims
- 1564US4046315ACentrifugal separator with discharge pumpWEATHERHEAD CO·Filed 1975·Granted Sep 6, 1977·22 cites·6 claims
- 1655US4118970ACrimping diameter adjusting valveWEATHERHEAD CO·Filed 1977·Granted Oct 10, 1978·9 cites·8 claims
- 1750US4006524AMethod of making a hose couplingWEATHERHEAD CO·Filed 1975·Granted Feb 8, 1977·19 cites·3 claims
- 1850US3965570AHose skiving toolWEATHERHEAD CO·Filed 1975·Granted Jun 29, 1976·15 cites·9 claims
- 1950US3937499AMounting for nonmetallic valvesWEATHERHEAD CO·Filed 1974·Granted Feb 10, 1976·11 cites·5 claims
- 2048US3972340ATilt responsive shut-off valveWEATHERHEAD CO·Filed 1974·Granted Aug 3, 1976·12 cites·6 claims
- 2145US3975059ABlend back proportioning valveWEATHERHEAD CO·Filed 1975·Granted Aug 17, 1976·5 cites·7 claims
- 2245US3937127AHydraulic brake booster with shut-off meansWEATHERHEAD CO·Filed 1974·Granted Feb 10, 1976·8 cites·10 claims
- 2344US3995710ATilt-responsive valveWEATHERHEAD CO·Filed 1975·Granted Dec 7, 1976·10 cites·8 claims
- 2440US3951043ABrake booster for motor vehicle fluid power circuitWEATHERHEAD CO·Filed 1974·Granted Apr 20, 1976·12 cites·6 claims
- 2537US3966263ABlend back proportioning valve for brake systemWEATHERHEAD CO·Filed 1975·Granted Jun 29, 1976·6 cites·14 claims
- 2632US3966268AInertia load sensing brake valveWEATHERHEAD CO·Filed 1975·Granted Jun 29, 1976·2 cites·24 claims
- 2730US3930686AAir brake blend back proportioning valveWEATHERHEAD CO·Filed 1974·Granted Jan 6, 1976·2 cites·9 claims
- 2825US4107048ATurbulence amplifier baffleWEATHERHEAD CO·Filed 1977·Granted Aug 15, 1978·7 cites·7 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →