Inventor · disambiguated record
Donald O. Johannsen
Also filed as: JOHANNSEN DONALD O · JOHANNSEN DONALD ORVILLE · SAELE ARVID H
11 granted patents·2 pending applications·78 citations·filing 1977–2016
88Inventor score
Top patents by PatentIndex Score
13 records- 0187US4947974AFast fill hydraulic clutchDEERE & CO·Filed 1988·Granted Aug 14, 1990·36 cites·6 claims
- 0283US9228875B2Liquid level detection system for a driveline componentDEERE & CO·Filed 2013·Granted Jan 5, 2016·8 cites·10 claims
- 0364US8499659B2Gearbox with multi-function quillBENSON RYAN·Filed 2011·Granted Aug 6, 2013·3 cites·13 claims
- 0458US9835186B2Hydraulic flushing system and methodDEERE & CO·Filed 2014·Granted Dec 5, 2017·1 cites·19 claims
- 0550US9988793B2Actuator rod scraper assemblyDEERE & CO·Filed 2016·Granted Jun 5, 2018·1 cites·20 claims
- 0650US8453499B2Motor shaft speed sensor arrangementJOHANNSEN DONALD ORVILLE·Filed 2008·Granted Jun 4, 2013·4 cites·20 claims
- 0748US4211079APositive neutral control for hydrostatic transmissionDEERE & CO·Filed 1979·Granted Jul 8, 1980·10 cites·4 claims
- 0840US4229144AFeedback shaft extending between swashplate and displacement control valveDEERE & CO·Filed 1978·Granted Oct 21, 1980·5 cites·10 claims
- 0940US2014151966A1Dual sealing arrangement for final drive gear boxDEERE & CO·Filed 2012·Application pending·0 cites
- 1039US8146925B2Face seal break-in compoundJOHANNSEN DONALD ORVILLE·Filed 2008·Granted Apr 3, 2012·0 cites·23 claims
- 1135US2014150589A1System for lubricating input shaft spline of final drive transmissionDEERE & CO·Filed 2012·Application pending·0 cites
- 1234US6212971B1Vibration isolated shift leverDEERE & CO·Filed 1999·Granted Apr 10, 2001·5 cites·13 claims
- 1328US4139066AHydraulic tilt and pitch control for dozer bladeDEERE & CO·Filed 1977·Granted Feb 13, 1979·5 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →