Inventor · disambiguated record
Frank T. Sargent
Also filed as: ANTOS JOHN M · BUTLER FREDERICK A · SARGENT FRANK T
23 granted patents·538 citations·filing 1974–2001
97Inventor score
Top patents by PatentIndex Score
23 records- 0194US4305164APortable toilet facilityTHETFORD CORP·Filed 1979·Granted Dec 15, 1981·63 cites·7 claims
- 0291USD255597SToiletTHETFORD CORP·Filed 1978·Granted Jun 24, 1980·25 cites·1 claims
- 0382USD250344SToiletTHETFORD CORP·Filed 1977·Granted Nov 21, 1978·15 cites·1 claims
- 0481US6142500AAdjustable, weight distributing trailer hitch apparatus with spring dampening assemblyFiled 1998·Granted Nov 7, 2000·44 cites·16 claims
- 0581US5945831AVolume charge density measuring systemFiled 1997·Granted Aug 31, 1999·63 cites·18 claims
- 0680USD250350SPortable toilet buildingTHETFORD CORP·Filed 1977·Granted Nov 21, 1978·14 cites·1 claims
- 0777US6536793B2Double-acting trailer hitchFiled 2001·Granted Mar 25, 2003·23 cites·5 claims
- 0877USD256722SToiletTHETFORD CORP·Filed 1978·Granted Sep 2, 1980·12 cites·1 claims
- 0976US6299191B1Double acting trailer hitchFiled 2000·Granted Oct 9, 2001·22 cites·17 claims
- 1076US4253679ATrailer hitch carriageSARGENT FRANK T·Filed 1979·Granted Mar 3, 1981·28 cites·13 claims
- 1175USD257385SToiletTHETFORD CORP·Filed 1978·Granted Oct 14, 1980·11 cites·1 claims
- 1274US4185337APortable toilet with improved flush apparatusTHETFORD CORP·Filed 1978·Granted Jan 29, 1980·26 cites·6 claims
- 1371US3939501AToiletTHETFORD CORP·Filed 1974·Granted Feb 24, 1976·25 cites·18 claims
- 1461US4180876APortable toiletsTHETFORD CORP·Filed 1978·Granted Jan 1, 1980·19 cites·18 claims
- 1559US6586950B1Volume charge density measuring systemFiled 1998·Granted Jul 1, 2003·22 cites·53 claims
- 1658US6586949B1Volume charge density measuring systemFiled 1999·Granted Jul 1, 2003·22 cites·20 claims
- 1758US6286851B1Doubling-acting reduced tongue weight trailer hitchFiled 1999·Granted Sep 11, 2001·24 cites·16 claims
- 1855US4462124AFlush apparatus for water closet and method of operationTHETFORD CORP·Filed 1981·Granted Jul 31, 1984·19 cites·11 claims
- 1953US4185340AToilet apparatusTHETFORD CORP·Filed 1978·Granted Jan 29, 1980·14 cites·17 claims
- 2051US4145773APortable toilet with vent means for the holding tankTHETFORD CORP·Filed 1978·Granted Mar 27, 1979·12 cites·8 claims
- 2147US5910217ACam actuated apparatus for frictionally controlling trailer swayFiled 1998·Granted Jun 8, 1999·18 cites·20 claims
- 2241US5951036AAdjustable coupler for a weight distributing trailer hitch apparatusFiled 1998·Granted Sep 14, 1999·14 cites·17 claims
- 2331US4192027AToiletTHETFORD CORP·Filed 1978·Granted Mar 11, 1980·3 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →