Inventor · disambiguated record
Charles L. Sargent
Also filed as: ANTOS JOHN M · SARGENT CHARLES L
36 granted patents·968 citations·filing 1977–2002
98Inventor score
Top patents by PatentIndex Score
36 records- 0195US6543375B1Solar powered boat liftQUALITY BOAT LIFTS INC·Filed 2001·Granted Apr 8, 2003·52 cites·13 claims
- 0294US5833417AAdjustable clamping assemblyQUALITY BOAT LIFTS INC·Filed 1997·Granted Nov 10, 1998·96 cites·26 claims
- 0394US4305164APortable toilet facilityTHETFORD CORP·Filed 1979·Granted Dec 15, 1981·63 cites·7 claims
- 0489US4776631ASelf-contained RV sanitary systemsTHETFORD CORP·Filed 1986·Granted Oct 11, 1988·63 cites·65 claims
- 0585US6230639B1Single motor boat lift having horizontally and longitudinally driven cablesQUALITY BOAT LIFTS INC·Filed 2000·Granted May 15, 2001·30 cites·12 claims
- 0684US4779650ATelescoping drain assembly for recreational vehiclesTHETFORD CORP·Filed 1987·Granted Oct 25, 1988·42 cites·10 claims
- 0783US5060320ARecreational vehicle toilet with foot pedal flushTHETFORD CORP·Filed 1990·Granted Oct 29, 1991·32 cites·4 claims
- 0882US6408776B1Synchronously driven, multiple cable boat liftQUALITY BOAT LIFTS INC·Filed 2000·Granted Jun 25, 2002·22 cites·3 claims
- 0979US5031249AUniversal recreational vehicle toilet system with removable holding tankTHETFORD CORP·Filed 1989·Granted Jul 16, 1991·41 cites·14 claims
- 1079USD287937SBottleTHETFORD CORP·Filed 1984·Granted Jan 27, 1987·18 cites·1 claims
- 1178US6709197B1Large capacity boat liftQUALITY BOAT LIFTS INC·Filed 2002·Granted Mar 23, 2004·19 cites·17 claims
- 1278US5988941ABoat lift cable lock apparatusQUALITY BOAT LIFTS INC·Filed 1997·Granted Nov 23, 1999·31 cites·19 claims
- 1378US4974899ARecreational vehicle use system particularly tank installationTHETFORD CORP·Filed 1989·Granted Dec 4, 1990·40 cites·4 claims
- 1477US5073994ALow water toilet with pulsed flushTHETFORD CORP·Filed 1990·Granted Dec 24, 1991·30 cites·15 claims
- 1577USD256722SToiletTHETFORD CORP·Filed 1978·Granted Sep 2, 1980·12 cites·1 claims
- 1675US5010602AToilet with pulsed flow of flush waterTHETFORD CORP·Filed 1990·Granted Apr 30, 1991·25 cites·2 claims
- 1772US4217668APortable toiletTHETFORD CORP·Filed 1979·Granted Aug 19, 1980·24 cites·15 claims
- 1870USD262051SPortable toiletTHETFORD CORP·Filed 1979·Granted Nov 24, 1981·9 cites·1 claims
- 1969US5247974APneumatic sealing device for waste disposal systemsTHETFORD CORP·Filed 1992·Granted Sep 28, 1993·35 cites·7 claims
- 2065US4944048ASelf-contained RV sanitary systemTHETFORD CORP·Filed 1989·Granted Jul 31, 1990·25 cites·38 claims
- 2163US5915877APositive drive boat liftQUALITY BOAT LIFT INC·Filed 1997·Granted Jun 29, 1999·21 cites·29 claims
- 2263US4906033ARV door assemblyTHETFORD CORP·Filed 1988·Granted Mar 6, 1990·22 cites·14 claims
- 2362US6640736B1Synchronously driven, multiple cable boat liftQUALITY BOAT LIFTS INC·Filed 2002·Granted Nov 4, 2003·9 cites·37 claims
- 2462US4892349AToilet system with removable holding tank for recreational vehiclesTHETFORD CORP·Filed 1988·Granted Jan 9, 1990·22 cites·13 claims
- 2558US4926508APortable toilet with battery operated flush assemblyTHETFORD CORP·Filed 1989·Granted May 22, 1990·21 cites·10 claims
- 2657US5957623AElectrically insulated positive drive boat liftQUALITY BOAT LIFTS INC·Filed 1998·Granted Sep 28, 1999·15 cites·25 claims
- 2757US4751753APortable toilet enclosureTHETFORD CORP·Filed 1986·Granted Jun 21, 1988·21 cites·3 claims
- 2855US4462124AFlush apparatus for water closet and method of operationTHETFORD CORP·Filed 1981·Granted Jul 31, 1984·19 cites·11 claims
- 2953US5611206AButter storing and conditioning deviceFiled 1996·Granted Mar 18, 1997·18 cites·17 claims
- 3052US5318275APortable waste holding tank with improved inlet valve assemblyTHETFORD CORP·Filed 1992·Granted Jun 7, 1994·15 cites·13 claims
- 3152US5056166ASelf-contained RV sanitary systemsTHETFORD CORP·Filed 1990·Granted Oct 15, 1991·19 cites·4 claims
- 3251US6158061ASanitary toilet with integral water supply and manual flush assemblyTHETFORD CORP·Filed 1996·Granted Dec 12, 2000·12 cites·1 claims
- 3349US5363532AApparatus for clamping eyeglassesSARGENT CHARLES L·Filed 1993·Granted Nov 15, 1994·15 cites·15 claims
- 3447US4641383APortable toilet holding tank spoutTHETFORD CORP·Filed 1985·Granted Feb 10, 1987·14 cites·12 claims
- 3539US4769860APortable toilet holding tank spoutTHETFORD CORP·Filed 1986·Granted Sep 13, 1988·10 cites·10 claims
- 3635US4096067AVolume displacement rod and holderTHETFORD CORP·Filed 1977·Granted Jun 20, 1978·6 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →