Inventor · disambiguated record
Garth H. Bulgrien
Also filed as: BULGRIEN GARTH · BULGRIEN GARTH H · BULGRIEN GARTH HARVEY
53 granted patents·4 pending applications·588 citations·filing 1989–2021
98Inventor score
Files withCNH IND AMERICA LLC22FORD NEW HOLLAND INC14DIX PETER J6CNH AMERICA LLC5NEW HOLLAND NORTH AMERICA INC5
Top patents by PatentIndex Score
57 records- 0196US8986162B2Shuttle shifting for a continuously variable transmissionDIX PETER J·Filed 2012·Granted Mar 24, 2015·31 cites·21 claims
- 0293US9097342B2Method for estimating and controlling driveline torque in a continuously variable hydro-mechanical transmissionDIX PETER J·Filed 2010·Granted Aug 4, 2015·19 cites·15 claims
- 0389US8858392B2Proportional parking brake control in cooperation with operation of a continuously variable transmissionDIX PETER J·Filed 2012·Granted Oct 14, 2014·11 cites·19 claims
- 0489US4989471AMethod of calibrating clutches in transmissionsFORD NEW HOLLAND INC·Filed 1990·Granted Feb 5, 1991·47 cites·10 claims
- 0587US10393230B2Transmission system for a work vehicleCNH IND AMERICA LLC·Filed 2016·Granted Aug 27, 2019·4 cites·17 claims
- 0686US5251132AClutch pressure control based on output shaft speedFORD NEW HOLLAND INC·Filed 1991·Granted Oct 5, 1993·40 cites·7 claims
- 0785US9856967B2Torque estimation for work machine power trainCNH IND AMERICA LLC·Filed 2014·Granted Jan 2, 2018·6 cites·16 claims
- 0884US5036718AShuttle shift transmissionsFORD NEW HOLLAND INC·Filed 1990·Granted Aug 6, 1991·36 cites·9 claims
- 0983US10451124B2Clutch control system for a work vehicleCNH IND AMERICA LLC·Filed 2017·Granted Oct 22, 2019·2 cites·20 claims
- 1083US6845682B1Smoothly shifting multispeed transmissionCNH AMERICA LLC·Filed 2003·Granted Jan 25, 2005·25 cites·8 claims
- 1182US9702417B2Method of calibration of a hydraulically operated clutch of a continuously variable transmission using pressure between a hydrostatic pump and motorDIX PETER J·Filed 2012·Granted Jul 11, 2017·5 cites·17 claims
- 1276US6676562B1Automatic clutch engagement controlled by engine speedNEW HOLLAND NORTH AMERICA INC·Filed 2002·Granted Jan 13, 2004·29 cites·13 claims
- 1374US4989470AMethod of decelerating a power shift transmissionFORD NEW HOLLAND INC·Filed 1990·Granted Feb 5, 1991·40 cites·14 claims
- 1473US10227942B2System and method for controlling a powershift transmissionCNH IND AMERICA LLC·Filed 2016·Granted Mar 12, 2019·1 cites·13 claims
- 1573US5012416AMedium speed transmission shuttle shiftingFORD NEW HOLLAND INC·Filed 1989·Granted Apr 30, 1991·29 cites·13 claims
- 1671US10336311B2System and method for controlling the speed of a work vehicle during downhill operationCNH IND AMERICA LLC·Filed 2017·Granted Jul 2, 2019·2 cites·16 claims
- 1771US9550490B2Method of using feedforward compensation based on pressure feedback for controlling swash plate angle in a hydrostatic power unit of a continuously variable transmissionGUO HAIBO·Filed 2012·Granted Jan 24, 2017·4 cites·8 claims
- 1871US6938509B2Transmission shift control for selecting forward, reverse, neutral and park, and method of operation of the sameCNH AMERICA LLC·Filed 2003·Granted Sep 6, 2005·12 cites·13 claims
- 1969US5007299AMethod of overriding ratio matching feature in power shift transmissionsFORD NEW HOLLAND INC·Filed 1990·Granted Apr 16, 1991·23 cites·17 claims
- 2068US5596153AMeasurement of rotational velocity and torqueNEW HOLLAND NORTH AMERICA INC·Filed 1995·Granted Jan 21, 1997·34 cites·22 claims
- 2167US6167685B1Windrower header speed controlNEW HOLLAND NORTH AMERICA INC·Filed 1999·Granted Jan 2, 2001·27 cites·8 claims
- 2266US9423026B2System and method for controlling a continuously variable transmission when transitioning operation from a hydrostatic mode to a hydro-mechanical modeCNH IND AMERICA LLC·Filed 2014·Granted Aug 23, 2016·2 cites·15 claims
- 2366US9140345B2System and method for controlling a continuously variable transmission during a shuttle shiftDIX PETER J·Filed 2012·Granted Sep 22, 2015·2 cites·5 claims
- 2465US9086127B2Shuttle shifting for a continuously variable transmissionPETRIGLIANO ROCCO·Filed 2012·Granted Jul 21, 2015·2 cites·15 claims
- 2562US5012690AProgrammable shuttle shifting in transmissionsFORD NEW HOLLAND INC·Filed 1990·Granted May 7, 1991·18 cites·3 claims
- 2661US7900739B2Control system for a vehicle system with a continously variable transmissionCNH AMERICA LLC·Filed 2006·Granted Mar 8, 2011·4 cites·8 claims
- 2761US5083647AMethod of controlling clutchesFORD NEW HOLLAND INC·Filed 1991·Granted Jan 28, 1992·17 cites·18 claims
- 2860US9303760B2System and method of controlling shifts of an electronically controlled mechanical transmission of a vehicleCNH IND AMERICA LLC·Filed 2014·Granted Apr 5, 2016·1 cites·14 claims
- 2959US6880393B2Detecting clutch slippage to measure drive line torque for clutch control during power shiftsCNH AMERICA LLC·Filed 2003·Granted Apr 19, 2005·7 cites·9 claims
- 3058US11592104B1Method of transmission control in order to protect clutches from damageCNH IND AMERICA LLC·Filed 2021·Granted Feb 28, 2023·0 cites·20 claims
- 3158US9556954B2System and method for performing shuttle shifts with a transmission of a work vehicleCNH IND AMERICA LLC·Filed 2013·Granted Jan 31, 2017·2 cites·17 claims
- 3257US5450768AClutch engagement modulation to control accelerationNEW HOLLAND NORTH AMERICA INC·Filed 1994·Granted Sep 19, 1995·23 cites·17 claims
- 3356US9555806B2System and method for controlling rollback of a work vehicleBULGRIEN GARTH HARVEY·Filed 2012·Granted Jan 31, 2017·2 cites·20 claims
- 3455US4991454APower shift transmission shift patternFORD NEW HOLLAND INC·Filed 1990·Granted Feb 12, 1991·22 cites·17 claims
- 3553US10927926B2Systems and methods for a transmission having a multi-speed range sectionCNH IND AMERICA LLC·Filed 2017·Granted Feb 23, 2021·0 cites·20 claims
- 3653US10196066B2Automotive productivity manager for power shift transmissionsCNH IND AMERICA LLC·Filed 2016·Granted Feb 5, 2019·0 cites·9 claims
- 3753US4991455AHigh speed deceleration of a power shift transmissionFORD NEW HOLLAND INC·Filed 1990·Granted Feb 12, 1991·14 cites·8 claims
- 3852US11112005B2Transmission system for a work vehicleCNH IND AMERICA LLC·Filed 2018·Granted Sep 7, 2021·0 cites·20 claims
- 3952US5101943AMethod of controlling inching clutchesFORD NEW HOLLAND INC·Filed 1990·Granted Apr 7, 1992·20 cites·9 claims
- 4050US10047807B2Clutch control for vehicle transmissionCNH IND AMERICA LLC·Filed 2016·Granted Aug 14, 2018·0 cites·18 claims
- 4150US9139192B2System and method for synchronizing ERPM and gear changes of a work vehicleCNH IND AMERICA LLC·Filed 2013·Granted Sep 22, 2015·0 cites·20 claims
- 4250US8224540B2Apparatus and method for inching using a continuously variable transmissionDIX PETER JOHN·Filed 2009·Granted Jul 17, 2012·3 cites·28 claims
- 4349US10823287B2System and method for determining and controlling engine speeds during gear shiftingCNH IND AMERICA LLC·Filed 2018·Granted Nov 3, 2020·0 cites·16 claims
- 4449US5083648AInching clutch compensation for centrifugal effectsFORD NEW HOLLAND INC·Filed 1991·Granted Jan 28, 1992·10 cites·13 claims
- 4548US11739814B2Relating to dual-clutch transmissionsCNH IND AMERICA LLC·Filed 2018·Granted Aug 29, 2023·0 cites·15 claims
- 4648US10816046B2Clutch control for shared power dissipationCNH IND AMERICA LLC·Filed 2016·Granted Oct 27, 2020·0 cites·14 claims
- 4747US8762013B2Shuttle strategy for vehicles with electronically controlled transmissions and enginesBULGRIEN GARTH H·Filed 2009·Granted Jun 24, 2014·1 cites·20 claims
- 4846US9283965B2System and method for enhancing the performance of a work vehicleCNH IND AMERICA LLC·Filed 2014·Granted Mar 15, 2016·0 cites·20 claims
- 4941US6516932B2Electro-hydraulic clutch hysteresis compensationNEW HOLLAND NORTH AMERICA INC·Filed 2001·Granted Feb 11, 2003·0 cites·6 claims
- 5041US2018172089A1Clutch control system for a work vehicle transmissionCNH IND AMERICA LLC·Filed 2016·Application pending·0 cites
Showing the top 50 of 57 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Garth H. Bulgrien 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 →