Inventor · disambiguated record
Karl A. Nerstad
Also filed as: CHADWICK CURTIS E III · NERSTAD KARL A · NERSTAD KARL ARDEN
8 granted patents·1 pending application·136 citations·filing 1975–2006
88Inventor score
Top patents by PatentIndex Score
9 records- 0190US4676116ACountershaft transmissionCATERPILLAR INC·Filed 1986·Granted Jun 30, 1987·48 cites·8 claims
- 0282US4614133AVehicle transmission having countershaft and planetary portionsCATERPILLAR INC·Filed 1984·Granted Sep 30, 1986·27 cites·14 claims
- 0368US4004670ASelf-modulated clutch with drag-reduction valveCATERPILLAR TRACTOR CO·Filed 1975·Granted Jan 25, 1977·18 cites·6 claims
- 0462US4238020ACentrifugal clutch with an overspeed relief valve and clutch modulationCATERPILLAR TRACTOR CO·Filed 1977·Granted Dec 9, 1980·16 cites·10 claims
- 0557US4658673APlanetary transmissionCATERPILLAR INC·Filed 1986·Granted Apr 21, 1987·14 cites·3 claims
- 0654US6620070B2Multi-speed transmissionCATERPILLAR INC·Filed 2001·Granted Sep 16, 2003·7 cites·17 claims
- 0742US2008153656A1Torsional damping assemblyCATERPILLAR INC·Filed 2006·Application pending·0 cites
- 0840US7357752B2Power train system having creeper moduleCATERPILLAR INC·Filed 2002·Granted Apr 15, 2008·1 cites·19 claims
- 0938US4660425ACountershaft transmission auxiliary drive mechanismCATERPILLAR INC·Filed 1986·Granted Apr 28, 1987·5 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →