Inventor · disambiguated record
Dennis Simpson
Also filed as: SIMPSON DENNIS · SIMPSON DENNIS L
11 granted patents·10 pending applications·344 citations·filing 1984–2012
93Inventor score
Files withTRICAM INTERNATIONAL INC5WHITE CASTLE SYSTEM5SIMPSON DENNIS3R M M CORP INC1SIMPSON DENNIS L1
Top patents by PatentIndex Score
21 records- 0194US7175205B2Collapsible utility trailerTRICAM INTERNATIONAL INC·Filed 2005·Granted Feb 13, 2007·35 cites·13 claims
- 0294US6962370B2Collapsible utility trailerTRICAM INTERNATIONAL INC·Filed 2003·Granted Nov 8, 2005·64 cites·16 claims
- 0389USD338893SMaterial spreaderWHITE CASTLE SYSTEM·Filed 1991·Granted Aug 31, 1993·36 cites·1 claims
- 0482US7210697B2Convertible handleTRICAM INTERNATIONAL INC·Filed 2004·Granted May 1, 2007·28 cites·14 claims
- 0581USD338894SMaterial spreaderWHITE CASTLE SYSTEM·Filed 1991·Granted Aug 31, 1993·23 cites·1 claims
- 0677US4588133ACombined chute and variable rate control assembly for a broadcast spreaderWHITE CASTLE SYSTEM·Filed 1984·Granted May 13, 1986·50 cites·1 claims
- 0772US6047909AHopper discharge and pattern controlling apparatus for a broadcast spreaderWHITE CASTLE SYSTEM·Filed 1997·Granted Apr 11, 2000·37 cites·17 claims
- 0866US6382570B1Adjustable hangarFiled 2000·Granted May 7, 2002·18 cites·20 claims
- 0962US2007181368A1Step ladderTRICAM INTERNATIONAL INC·Filed 2007·Application pending·0 cites
- 1061US2008006480A1Convertible ladderTRICAM INDUSTRIES INC·Filed 2007·Application pending·0 cites
- 1160US4681265ASwath-controlling variable chute and chute-activated damper for a broadcast spreaderWHITE CASTLE SYSTEM·Filed 1985·Granted Jul 21, 1987·31 cites·1 claims
- 1252USD662522SMaterial spreaderSIMPSON DENNIS L·Filed 2011·Granted Jun 26, 2012·9 cites·1 claims
- 1349US6662679B2Removable handle and tongue assemblyTRACTOR SUPPLY CO·Filed 2002·Granted Dec 16, 2003·13 cites·12 claims
- 1446US2005051386A1Ladder support braceFiled 2004·Application pending·0 cites
- 1545US2007182150A1Collapsible utility trailerTRICAM INTERNATIONAL INC·Filed 2007·Application pending·0 cites
- 1643US2006070806A1Ladder with storage compartmentSIMPSON DENNIS·Filed 2004·Application pending·0 cites
- 1743US2003146047A1Convertible ladderFiled 2002·Application pending·0 cites
- 1843US2002043902A1Collapsible storage deviceR M M CORP INC·Filed 2001·Application pending·0 cites
- 1939US2013224037A1Compound airfoilSIMPSON DENNIS·Filed 2012·Application pending·0 cites
- 2036US2005274571A1Convertible fiberglass ladderSIMPSON DENNIS·Filed 2004·Application pending·0 cites
- 2135US2010229473A1Pneumatic Tower DesignTHOMAS IND ROLLS INC·Filed 2009·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →