Inventor · disambiguated record
Richard F. Wulff
Also filed as: JOHNSON EVERETT E · WULFF RICHARD F
17 granted patents·726 citations·filing 1974–1999
95Inventor score
Top patents by PatentIndex Score
17 records- 0196US4956891AFloor cleanerCASTEX IND INC·Filed 1990·Granted Sep 18, 1990·222 cites·18 claims
- 0295US5611106ACarpet maintainerCASTEX INC·Filed 1996·Granted Mar 18, 1997·188 cites·10 claims
- 0391US3930630AVacuum cleaner support apparatusADVANCE MACHINE CO·Filed 1974·Granted Jan 6, 1976·51 cites·10 claims
- 0485USD337185SCarpet vacuum cleanerCASTEX IND INC·Filed 1990·Granted Jul 6, 1993·27 cites·1 claims
- 0583USD352146SCompact carpet extractorCASTEX INCORPORATED·Filed 1992·Granted Nov 1, 1994·29 cites·1 claims
- 0675US6079080AUpright floor cleanerCASTEX INC·Filed 1998·Granted Jun 27, 2000·47 cites·26 claims
- 0770US4158901AMobile surface cleaning machine having side mounted squeegeesADVANCE MACHINE·Filed 1977·Granted Jun 26, 1979·33 cites·8 claims
- 0860US3930277AMobile floor sweeperADVANCE MACHINE CO·Filed 1974·Granted Jan 6, 1976·17 cites·7 claims
- 0959USD316765SCleaning machineCASTEX IND INC·Filed 1988·Granted May 7, 1991·8 cites·1 claims
- 1055US6249926B1Sequential actuation skirt and brush floor scrubberTENNANT CO·Filed 1999·Granted Jun 26, 2001·23 cites·15 claims
- 1154US4186459ACarpet brush attachment for a floor treating machineADVANCE MACHINE·Filed 1978·Granted Feb 5, 1980·17 cites·6 claims
- 1247US4756042AFloor polishing machineSOUTHWEST MANUFACTURERS & DIST·Filed 1987·Granted Jul 12, 1988·15 cites·4 claims
- 1346US5608939AMotor and driver mount diaphragm burnisherCASTEX INC·Filed 1995·Granted Mar 11, 1997·17 cites·14 claims
- 1444US6115880AVacuum cleaner configurationCASTEX INC·Filed 1998·Granted Sep 12, 2000·16 cites·45 claims
- 1542USD345035SFloor machine handleCASTEX IND INC·Filed 1992·Granted Mar 8, 1994·4 cites·1 claims
- 1641USD343932SBurnisherCASTEX IND INC·Filed 1992·Granted Feb 1, 1994·4 cites·1 claims
- 1730US6085383AVacuum cleaner brush wrap geometryCASTEX INC·Filed 1998·Granted Jul 11, 2000·8 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →