Inventor · disambiguated record
Ryan M. Duffek
Also filed as: DUFFEK RYAN M
6 granted patents·52 citations·filing 2007–2009
82Inventor score
Top patents by PatentIndex Score
6 records- 0179USD590419SEngine exhaust treatment device housingCATERPILLAR INC·Filed 2008·Granted Apr 14, 2009·21 cites·1 claims
- 0275US8097055B2System for treating exhaust gasSTALEY THOMAS V·Filed 2007·Granted Jan 17, 2012·10 cites·20 claims
- 0365US8083822B2System for treating exhaust gasHOFFMAN LORAN·Filed 2009·Granted Dec 27, 2011·11 cites·20 claims
- 0446US8092563B2System for treating exhaust gasCRANDELL RICHARD A·Filed 2007·Granted Jan 10, 2012·4 cites·20 claims
- 0545USD645882SEngine exhaust treatment device housingCATERPILLAR INC·Filed 2009·Granted Sep 27, 2011·4 cites·1 claims
- 0637USD645477SEngine exhaust treatment device housingCATERPILLAR INC·Filed 2009·Granted Sep 20, 2011·2 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →