Inventor · disambiguated record
Douglas W. Friedrich
Also filed as: FRIEDRICH DOUGLAS W
7 granted patents·1,625 citations·filing 1992–1995
92Inventor score
Files withCATERPILLAR INC7
Top patents by PatentIndex Score
7 records- 0198US5555503ASystem and method for providing accurate vehicle positioning using spatial bias techniquesCATERPILLAR INC·Filed 1993·Granted Sep 10, 1996·243 cites·17 claims
- 0298US5390125AVehicle position determination system and methodCATERPILLAR INC·Filed 1993·Granted Feb 14, 1995·473 cites·2 claims
- 0398US5375059AVehicle position determination system and methodCATERPILLAR INC·Filed 1993·Granted Dec 20, 1994·333 cites·2 claims
- 0495US5438517AVehicle position determination system and methodCATERPILLAR INC·Filed 1993·Granted Aug 1, 1995·207 cites·3 claims
- 0595US5359521AMethod and apparatus for determining vehicle position using a satellite based navigation systemCATERPILLAR INC·Filed 1992·Granted Oct 25, 1994·234 cites·7 claims
- 0691US5629855ASystem and method for using parabolic models to improve position estimates from a global positioning systemCATERPILLAR INC·Filed 1995·Granted May 13, 1997·114 cites·4 claims
- 0753US5410325AAntenna mounting apparatusCATERPILLAR INC·Filed 1993·Granted Apr 25, 1995·21 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →