Inventor · disambiguated record
Louis C. Harms
Also filed as: HARMS LOUIS C
12 granted patents·3 pending applications·494 citations·filing 1977–2010
94Inventor score
Files withPARKER HANNIFIN CORP6FLUID POWER IND INC3PARKER HANNIFIN CORP AN OHIO C2AMBAC IND1HARMS LOUIS C1
Top patents by PatentIndex Score
15 records- 0196US6422533B1High force solenoid valve and method of improved solenoid valve performancePARKER HANNIFIN CORP·Filed 2000·Granted Jul 23, 2002·67 cites·20 claims
- 0296US6286535B1Proportional pressure control valvePARKER HANNIFIN CORP·Filed 2000·Granted Sep 11, 2001·45 cites·30 claims
- 0396US5836335AProportional pressure control valveFLUID POWER IND INC·Filed 1996·Granted Nov 17, 1998·78 cites·9 claims
- 0491US4121610AElectrically operated proportional flow control hydraulic valve and manually operable remote control device thereforAMBAC IND·Filed 1977·Granted Oct 24, 1978·104 cites·23 claims
- 0588US6571828B2Proportional pressure control valvePARKER HANNIFIN CORP·Filed 2002·Granted Jun 3, 2003·25 cites·7 claims
- 0687US6481463B1Control valve with mechanical feedback and method for controlling fluid flowPARKER HANNIFIN CORP·Filed 2000·Granted Nov 19, 2002·28 cites·28 claims
- 0784US5598794AHigh accuracy automatically controlled variable linear seed spacing planting apparatusFLUID POWER IND INC·Filed 1995·Granted Feb 4, 1997·58 cites·25 claims
- 0883US4873817AElectrically controlled pressure relief valve system and methodUNITED TECHNOLOGIES AUTOMOTIVE·Filed 1988·Granted Oct 17, 1989·41 cites·11 claims
- 0979US6405746B2Proportional pressure control valvePARKER HANNIFIN CORP·Filed 2001·Granted Jun 18, 2002·11 cites·5 claims
- 1075US5461903AApparatus and method for detecting leak in hydraulic systemFLUID POWER IND INC·Filed 1994·Granted Oct 31, 1995·33 cites·16 claims
- 1154US6926033B2Proportional pressure control valvePARKER HANNIFIN CORP·Filed 2004·Granted Aug 9, 2005·3 cites·17 claims
- 1253US8398004B2Hydraulic drive system for sand and salt spreadersHARMS LOUIS C·Filed 2010·Granted Mar 19, 2013·1 cites·20 claims
- 1348US2008017261A1Proportional pressure control valvePARKER HANNIFIN CORP AN OHIO C·Filed 2007·Application pending·0 cites
- 1445US2005173008A1Proportional pressure control valvePARKER HANNIFIN CORP AN OHIO C·Filed 2005·Application pending·0 cites
- 1539US2003188788A1Proportional pressure control valveFiled 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →