Inventor · disambiguated record
Douglas D. Colby
Also filed as: COLBY DOUGLAS · COLBY DOUGLAS D
13 granted patents·5 pending applications·150 citations·filing 1993–2020
92Inventor score
Files withCAPITAL FORMATION INC8Q E D ENV SYSTEMS INC3Q E D ENVIRONMENTAL SYSTEMS INC3COLBY DOUGLAS D1GRACO MINNESOTA INC1
Top patents by PatentIndex Score
18 records- 0185US6386598B1Locking power clampCAPITAL FORMATION INC·Filed 2000·Granted May 14, 2002·41 cites·10 claims
- 0280US9926759B2Removable orifice plate deviceQ E D ENV SYSTEMS INC·Filed 2015·Granted Mar 27, 2018·3 cites·16 claims
- 0379US7311301B2Hook pin unit having weld slag protectionCAPITAL FORMATION INC·Filed 2005·Granted Dec 25, 2007·11 cites·16 claims
- 0477US6832539B2Cylinder lockCAPITAL FORMATION INC·Filed 2002·Granted Dec 21, 2004·16 cites·29 claims
- 0574US7686286B2Variable thickness pin clampCAPITAL FORMATION INC·Filed 2006·Granted Mar 30, 2010·10 cites·15 claims
- 0673US8800597B2Fine control gas valveCOLBY DOUGLAS D·Filed 2011·Granted Aug 12, 2014·4 cites·27 claims
- 0770US9068421B2Molded well head coverQ E D ENVIRONMENTAL SYSTEMS INC·Filed 2012·Granted Jun 30, 2015·4 cites·26 claims
- 0869US9695945B2Fine control gas valveGRACO MINNESOTA INC·Filed 2014·Granted Jul 4, 2017·2 cites·12 claims
- 0963US5961109AAmplified hold-down clampCAPITAL FORMATION INC·Filed 1998·Granted Oct 5, 1999·22 cites·28 claims
- 1062US6655673B2Power clamp mechanismCAPITAL FORMATION INC·Filed 2001·Granted Dec 2, 2003·11 cites·58 claims
- 1161US7669840B2Hook clamp unitCAPITAL FORMATION INC·Filed 2006·Granted Mar 2, 2010·7 cites·19 claims
- 1261US7314214B2Power clampCAPITAL FORMATION INC·Filed 2006·Granted Jan 1, 2008·3 cites·20 claims
- 1357US2020256342A1Groundwater sampling pumpQED ENV SYSTEMS INC·Filed 2020·Application pending·0 cites
- 1454US2016298632A1Groundwater Sampling PumpQ E D ENV SYSTEMS INC·Filed 2014·Application pending·0 cites
- 1548US2013180703A1Removable orifice plate deviceQ E D ENVIRONMENTAL SYSTEMS INC·Filed 2013·Application pending·0 cites
- 1644US2018058464A1Pump Having Edge Mounted O-Ring SealQ E D ENV SYSTEMS INC·Filed 2017·Application pending·0 cites
- 1742US5431191AMechanically interlocked layered tube with controlled flexibilityTITEFLEX CORP·Filed 1993·Granted Jul 11, 1995·16 cites·6 claims
- 1836US2011176865A1Cam-bolt assemblyQ E D ENVIRONMENTAL SYSTEMS INC·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →