Inventor · disambiguated record
Willard J. Haak
Also filed as: HAAK WILLARD J
9 granted patents·182 citations·filing 1975–1978
90Inventor score
Top patents by PatentIndex Score
9 records- 0196US4250794AHigh pressure hydraulic systemCATERPILLAR TRACTOR CO·Filed 1978·Granted Feb 17, 1981·63 cites·5 claims
- 0276US4206688AOverrunning load control for hydraulic motorsCATERPILLAR TRACTOR CO·Filed 1978·Granted Jun 10, 1980·22 cites·10 claims
- 0371US3972267AOverruning load control for hydraulic jacksCATERPILLAR TRACTOR CO·Filed 1975·Granted Aug 3, 1976·22 cites·7 claims
- 0466US4029549AProcess of producing 9α-hydroxy-3-ketobisnorchol-4-en-22-oic with mycobacterium fortuitumUPJOHN CO·Filed 1976·Granted Jun 14, 1977·19 cites·15 claims
- 0563US4102425AFront wheel drive system for a vehicleCATERPILLAR TRACTOR CO·Filed 1977·Granted Jul 25, 1978·19 cites·8 claims
- 0656US4029166AFinal sprocket drive for track-type vehiclesCATERPILLAR TRACTOR CO·Filed 1975·Granted Jun 14, 1977·15 cites·20 claims
- 0747US4062880A9α-Hydroxy-bis-nor-cholanic acidUPJOHN CO·Filed 1977·Granted Dec 13, 1977·4 cites·1 claims
- 0844US4126083AAttitude control for implementCATERPILLAR TRACTOR CO·Filed 1977·Granted Nov 21, 1978·8 cites·9 claims
- 0942US3990528AEpicyclic final drive for track-type vehiclesCATERPILLAR TRACTOR CO·Filed 1975·Granted Nov 9, 1976·10 cites·23 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →