Inventor · disambiguated record
Douglas C. Barker
Also filed as: BARKER DOUGLAS C · BARKER DOUGLAS CHRISTOPHER
28 granted patents·2 pending applications·579 citations·filing 1994–2021
97Inventor score
Top patents by PatentIndex Score
30 records- 0193US5960514AWheel driven suction nozzleHOOVER CO·Filed 1997·Granted Oct 5, 1999·125 cites·21 claims
- 0291US10687568B2Surgical helmetZIMMER INC·Filed 2017·Granted Jun 23, 2020·15 cites·20 claims
- 0390US11284655B2Surgical helmetZIMMER INC·Filed 2020·Granted Mar 29, 2022·4 cites·20 claims
- 0487US7039985B2Removable hose and tool caddyHOOVER CO·Filed 2002·Granted May 9, 2006·51 cites·20 claims
- 0582US8002779B2Dermatome blade assemblyZIMMER SURGICAL INC·Filed 2007·Granted Aug 23, 2011·27 cites·15 claims
- 0682US5867864AHand held turbine powered extractor nozzleHOOVER CO·Filed 1997·Granted Feb 9, 1999·51 cites·42 claims
- 0781US5961676AHard bag door with air directing arrangementHOOVER CO·Filed 1998·Granted Oct 5, 1999·60 cites·22 claims
- 0875US5443362AAir turbineHOOVER CO·Filed 1994·Granted Aug 22, 1995·46 cites·10 claims
- 0974US6134746AHand held turbine powered extractor nozzleHOOVER CO·Filed 1999·Granted Oct 24, 2000·39 cites·20 claims
- 1074US5870798ACompact carpet and upholstery extractorHOOVER CO·Filed 1996·Granted Feb 16, 1999·33 cites·25 claims
- 1170US11793250B2Surgical helmetZIMMER INC·Filed 2021·Granted Oct 24, 2023·0 cites·20 claims
- 1270USD488893SVacuum cleanerHOOVER CO·Filed 2001·Granted Apr 20, 2004·16 cites·1 claims
- 1370USD426688SVacuum cleaner upper portionHOOVER CO·Filed 1999·Granted Jun 13, 2000·15 cites·1 claims
- 1464US6108860ACompact carpet and upholstery extractorHOOVER CO·Filed 1998·Granted Aug 29, 2000·24 cites·15 claims
- 1562USD474315SVacuum cleaner suction nozzleHOOVER CO·Filed 2002·Granted May 6, 2003·12 cites·1 claims
- 1662USD427397SVacuum cleaner upper portionHOOVER CO·Filed 1999·Granted Jun 27, 2000·11 cites·1 claims
- 1761USD398100SCarpet extractorHOOVER CO·Filed 1996·Granted Sep 8, 1998·11 cites·1 claims
- 1859US2011000937A1ContainerIPTECH LTD·Filed 2008·Application pending·0 cites
- 1958US7367083B2Suction nozzle assembly for a cleaning apparatusHEALTHY GAIN INVESTMENTS LTD·Filed 2004·Granted May 6, 2008·10 cites·10 claims
- 2056US12171533B2Automatic cuff identification system and methodZIMMER INC·Filed 2021·Granted Dec 24, 2024·0 cites·15 claims
- 2147US2011276060A1Dermatome blade assemblyZIMMER SURGICAL INC·Filed 2011·Application pending·0 cites
- 2245USD473686SUpper portion of a vacuum cleanerHOOVER CO·Filed 2002·Granted Apr 22, 2003·5 cites·1 claims
- 2345USD426689SVacuum cleaner upper portionHOOVER CO·Filed 1999·Granted Jun 13, 2000·5 cites·1 claims
- 2444USD545012SBase for an upright extractorHOOVER CO·Filed 2004·Granted Jun 19, 2007·5 cites·1 claims
- 2542USD498888SCarpet cleaning dry powder spreaderHOOVER CO·Filed 2003·Granted Nov 23, 2004·4 cites·1 claims
- 2638USD534699SPortion of a portable cleaning machineHOOVER CO·Filed 2004·Granted Jan 2, 2007·3 cites·1 claims
- 2738USD517260SPortable cleaning machineHOOVER CO·Filed 2004·Granted Mar 14, 2006·3 cites·1 claims
- 2835USD513649STank for a portable cleaning machineHOOVER CO·Filed 2004·Granted Jan 17, 2006·2 cites·1 claims
- 2932USD513648STank for a portable cleaning machineHOOVER CO·Filed 2004·Granted Jan 17, 2006·1 cites·1 claims
- 3032USD505527SPortion of a hood for a dry carpet cleaning dry powder spreaderHOOVER CO·Filed 2003·Granted May 24, 2005·1 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →