Inventor · disambiguated record
John Butwin
Also filed as: BUTWIN JOHN
8 granted patents·79 citations·filing 1999–2015
84Inventor score
Top patents by PatentIndex Score
8 records- 0190US8255130B2Closed-loop torque phase control for shifting automatic transmission gear ratios based on friction element load sensingFUJII YUJI·Filed 2009·Granted Aug 28, 2012·20 cites·22 claims
- 0284US8734293B1Accumulator for maintaining hydraulic pressure following an engine restartFORD GLOBAL TECH LLC·Filed 2012·Granted May 27, 2014·7 cites·17 claims
- 0379US10006541B2Regulator valve with integrated direct acting solenoidFORD GLOBAL TECH LLC·Filed 2015·Granted Jun 26, 2018·4 cites·8 claims
- 0479US6170506B1Method and circuit for actively cleaning electrohydraulic valves in a hydraulic control valve circuitFORD GLOBAL TECH INC·Filed 1999·Granted Jan 9, 2001·45 cites·6 claims
- 0564US9010374B2Regulator valve with integrated direct acting solenoidBURKHART ROBERT O·Filed 2011·Granted Apr 21, 2015·2 cites·13 claims
- 0660US8960232B2Latch valve for actuating a transmission control elementBURKHART ROBERT O·Filed 2011·Granted Feb 24, 2015·1 cites·21 claims
- 0744US9441732B2Regulator valve with integrated direct acting solenoidFORD GLOBAL TECH LLC·Filed 2015·Granted Sep 13, 2016·0 cites·15 claims
- 0839US8490640B2Latching pressure regulatorMAHAPATRO HRUDAYA·Filed 2009·Granted Jul 23, 2013·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →