Inventor · disambiguated record
Douglas E. Flemming
Also filed as: FLEMMING DOUGLAS E
12 granted patents·1 pending application·767 citations·filing 1987–2005
94Inventor score
Files withDONALDSON CO INC13
Top patents by PatentIndex Score
13 records- 0198US4851015AMuffler apparatus with filter trap and method of useDONALDSON CO INC·Filed 1987·Granted Jul 25, 1989·186 cites·27 claims
- 0297US5355973AMuffler with catalytic converter arrangement; and methodDONALDSON CO INC·Filed 1992·Granted Oct 18, 1994·97 cites·22 claims
- 0395US6550573B2Muffler with catalytic converter arrangement, and methodDONALDSON CO INC·Filed 2001·Granted Apr 22, 2003·47 cites·32 claims
- 0493US5426269AMuffler with catalytic converter arrangement; and methodDONALDSON CO INC·Filed 1993·Granted Jun 20, 1995·102 cites·6 claims
- 0589US5828013AMuffler with catalytic converter arrangement; and methodDONALDSON CO INC·Filed 1996·Granted Oct 27, 1998·48 cites·21 claims
- 0688US4899540AMuffler apparatus with filter trap and method of useDONALDSON CO INC·Filed 1987·Granted Feb 13, 1990·65 cites·8 claims
- 0787US5053603AElectrical resistance heaterDONALDSON CO INC·Filed 1989·Granted Oct 1, 1991·55 cites·5 claims
- 0886US6892854B2Muffler with catalytic converter arrangement; and methodDONALDSON CO INC·Filed 2003·Granted May 17, 2005·25 cites·5 claims
- 0981US4790574AApparatus for coupling tubular membersDONALDSON CO INC·Filed 1987·Granted Dec 13, 1988·50 cites·29 claims
- 1074US5101095ADiesel engine gas filter with electrical heaterDONALDSON CO INC·Filed 1990·Granted Mar 31, 1992·43 cites·1 claims
- 1164US4878928AApparatus for increasing regenerative filter heating element temperatureDONALDSON CO INC·Filed 1988·Granted Nov 7, 1989·32 cites·1 claims
- 1261US4832661AApparatus and method for maintaining alternator output above predetermined levelsDONALDSON CO INC·Filed 1988·Granted May 23, 1989·17 cites·5 claims
- 1349US2005223703A1Muffler with catalytic converter arrangement; and methodDONALDSON CO INC·Filed 2005·Application pending·0 cites
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