Inventor · disambiguated record
Douglas W. Koehler
Also filed as: KOEHLER DOUGLAS W
14 granted patents·500 citations·filing 1996–2010
94Inventor score
Top patents by PatentIndex Score
14 records- 0198US5960695ASystem and method for controlling an independent metering valveCATERPILLAR INC·Filed 1997·Granted Oct 5, 1999·142 cites·31 claims
- 0296US5947140ASystem and method for controlling an independent metering valveCATERPILLAR INC·Filed 1998·Granted Sep 7, 1999·68 cites·11 claims
- 0388US6173572B1Method and apparatus for controlling a bypass valve of a fluid circuitCATERPILLAR INC·Filed 1999·Granted Jan 16, 2001·42 cites·17 claims
- 0488US5678470ATilt priority scheme for a control systemCATERPILLAR INC·Filed 1996·Granted Oct 21, 1997·61 cites·4 claims
- 0587US7926267B2Hystat transmission having pressure override controlCATERPILLAR INC·Filed 2008·Granted Apr 19, 2011·18 cites·20 claims
- 0682US6446433B1Hydraulic control system for improving pump response and dynamic matching of pump and valveCATERPILLAR INC·Filed 2000·Granted Sep 10, 2002·21 cites·11 claims
- 0781US6199378B1Off-setting rate of pressure rise in a fluid systemCATERPILLAR INC·Filed 1999·Granted Mar 13, 2001·30 cites·7 claims
- 0874US8631650B2Hydraulic system and method for controlVERKUILEN MICHAEL T·Filed 2010·Granted Jan 21, 2014·7 cites·20 claims
- 0972US6257118B1Method and apparatus for controlling the actuation of a hydraulic cylinderCATERPILLAR INC·Filed 1999·Granted Jul 10, 2001·40 cites·17 claims
- 1071US5664477AControl system for a hydraulic circuitCATERPILLAR INC·Filed 1996·Granted Sep 9, 1997·21 cites·8 claims
- 1170US6609369B2System and method of pressure compensation for electro hydraulic control systemsCATERPILLAR INC·Filed 2001·Granted Aug 26, 2003·19 cites·18 claims
- 1266US6357276B1System and method for calibrating a independent metering valveCATERPILLAR INC·Filed 1999·Granted Mar 19, 2002·18 cites·8 claims
- 1363US8171895B2Coolant flow control system and methodSCOLTON CHRIS J·Filed 2008·Granted May 8, 2012·7 cites·20 claims
- 1434US5878363AControl to improve dump while liftingCATERPILLAR INC·Filed 1996·Granted Mar 2, 1999·6 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →