Inventor · disambiguated record
William E. Fritz
Also filed as: FRITZ WILLIAM E
13 granted patents·195 citations·filing 1974–1989
92Inventor score
Top patents by PatentIndex Score
13 records- 0187US5106245AWheel chocks for use on vehicle transport carriersMOYER DONALD L·Filed 1988·Granted Apr 21, 1992·59 cites·21 claims
- 0275US4450773ASliding gate for a railroad hopper carYOUNGSTOWN STEEL DOOR CO·Filed 1981·Granted May 29, 1984·32 cites·6 claims
- 0364US3938446ADoor assemblies for closing rail car end openingsYOUNGSTOWN STEEL DOOR CO·Filed 1974·Granted Feb 17, 1976·17 cites·29 claims
- 0463US4344365ARailway hopper car gate anti-friction sealYOUNGSTOWN STEEL DOOR CO·Filed 1979·Granted Aug 17, 1982·18 cites·7 claims
- 0559US4973067AHopper car discharge gate sealGEN TECH INC·Filed 1989·Granted Nov 27, 1990·17 cites·20 claims
- 0644US4974999ALock for a railroad hopper car outlet gate end tube assemblyGEN TECH INC·Filed 1989·Granted Dec 4, 1990·9 cites·4 claims
- 0739US4543889AHatch cover seal assemblyDEV MARK INC·Filed 1983·Granted Oct 1, 1985·11 cites·4 claims
- 0837US4429921ASliding bearing and sealYOUNGSTOWN STEEL DOOR CO·Filed 1982·Granted Feb 7, 1984·6 cites·4 claims
- 0936US4975000ARailroad hopper car outlet gate end tube assembliesGEN TECH INC·Filed 1989·Granted Dec 4, 1990·10 cites·10 claims
- 1035US4867615AHopper car discharge gateFRITZ WILLIAM E·Filed 1988·Granted Sep 19, 1989·7 cites·1 claims
- 1135US4164189ADoor assemblies for closing rail car end openingYOUNGSTOWN STEEL DOOR CO·Filed 1976·Granted Aug 14, 1979·7 cites·10 claims
- 1231US4324188AHopper discharge outlet and methodYOUNGSTOWN STEEL DOOR CO·Filed 1980·Granted Apr 13, 1982·2 cites·5 claims
- 1327US5005739ARailroad hopper car outlet gate end tube sealGEN TECH INC·Filed 1989·Granted Apr 9, 1991·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →