Inventor · disambiguated record
Jon W. Harwood
Also filed as: HARWOOD JON · HARWOOD JON W
40 granted patents·1,379 citations·filing 1982–2009
98Inventor score
Files withAP PARTS MFG18AP IND INC12APX GROUP INC6APPARTS MANUFACTURING COMPANY1FAURECIA EXHAUST SYSTEMS INC1
Top patents by PatentIndex Score
40 records- 0190US4700806AStamp formed mufflerAP IND INC·Filed 1986·Granted Oct 20, 1987·69 cites·22 claims
- 0285US4909348AStamp formed exhaust muffler with conformal outer shellAP PARTS MFG·Filed 1988·Granted Mar 20, 1990·65 cites·18 claims
- 0385US4894987AStamp formed muffler and catalytic converter assemblyAP PARTS MFG·Filed 1988·Granted Jan 23, 1990·55 cites·19 claims
- 0484US4732025APrecision bending apparatus and processAP IND INC·Filed 1987·Granted Mar 22, 1988·32 cites·12 claims
- 0582US4821840AStamp formed exhaust muffler with conformal outer shellAP PARTS MFG·Filed 1988·Granted Apr 18, 1989·52 cites·7 claims
- 0682US4759423ATube and chamber construction for an exhaust mufflerAP IND INC·Filed 1987·Granted Jul 26, 1988·54 cites·26 claims
- 0782US4537027AHybrid exhaust manifoldAPX GROUP INC·Filed 1983·Granted Aug 27, 1985·42 cites·14 claims
- 0881US4765437AStamp formed muffler with multiple low frequency resonating chambersAP IND INC·Filed 1987·Granted Aug 23, 1988·55 cites·19 claims
- 0981US4736817AStamp formed mufflerAP IND INC·Filed 1987·Granted Apr 12, 1988·48 cites·8 claims
- 1080US7273129B2Muffler with internal heat shieldFAURECIA EXHAUST SYSTEMS INC·Filed 2004·Granted Sep 25, 2007·28 cites·16 claims
- 1180US4901815AStamp formed mufflersPARTS MANUFACTURING COMPANY·Filed 1989·Granted Feb 20, 1990·30 cites·8 claims
- 1279US4590652AMethod for fabricating an air gap pipeAPX GROUP INC·Filed 1984·Granted May 27, 1986·42 cites·4 claims
- 1378US5448831AMethod of manufacturing a stamp formed muffler with hermetically sealed laminated outer shellAP PARTS MFG·Filed 1993·Granted Sep 12, 1995·46 cites·8 claims
- 1477US4760894AExhaust muffler with angularly aligned inlets and outletsAP IND INC·Filed 1987·Granted Aug 2, 1988·47 cites·25 claims
- 1577US4656713AMethod for forming an air gap pipeAP IND INC·Filed 1985·Granted Apr 14, 1987·34 cites·21 claims
- 1676US4619292AAir gap pipeAPX GROUP INC·Filed 1985·Granted Oct 28, 1986·38 cites·7 claims
- 1776US4475623AUniversal muffler assemblyAPX GROUP INC·Filed 1982·Granted Oct 9, 1984·43 cites·7 claims
- 1872US4928372AProcess for manufacturing stamp formed mufflersAP PARTS MFG·Filed 1989·Granted May 29, 1990·34 cites·24 claims
- 1970US5563385AStamp formed muffler with siphon tubeAP PARTS MFG·Filed 1995·Granted Oct 8, 1996·35 cites·15 claims
- 2070US5004069AStamp formed muffler with transverse baffle tubeAP PARTS MFG·Filed 1990·Granted Apr 2, 1991·41 cites·17 claims
- 2169US5726398AAutomotive bumper and muffler combinationAP PARTS MFG·Filed 1997·Granted Mar 10, 1998·32 cites·14 claims
- 2269US4836330APlural chamber stamp formed muffler with single intermediate tubeAP IND INC·Filed 1988·Granted Jun 6, 1989·33 cites·17 claims
- 2369US4806726AApparatus for machining a bent elongated member of variable configurationAP IND INC·Filed 1987·Granted Feb 21, 1989·26 cites·9 claims
- 2468US8402756B2Equal length Y-collectorLUCE DAVID R·Filed 2009·Granted Mar 26, 2013·9 cites·10 claims
- 2568US4501302AAir gap pipeAPX GROUP INC·Filed 1983·Granted Feb 26, 1985·31 cites·5 claims
- 2665US5859394AMuffler with stamped internal plates defining tubes and separating chambersAP PARTS MFG·Filed 1997·Granted Jan 12, 1999·36 cites·10 claims
- 2765US4656712AMethod for manufacturing a heat shielded exhaust system componentAP IND INC·Filed 1986·Granted Apr 14, 1987·28 cites·17 claims
- 2864US5597986AStamp formed muffler with nested chambersAP PARTS MFG·Filed 1995·Granted Jan 28, 1997·31 cites·23 claims
- 2964US5173577AStamp formed muffler with low back pressureAP PARTS MFG·Filed 1990·Granted Dec 22, 1992·36 cites·29 claims
- 3063US5164551AStamp formed muffler with compound reinforcement pattern for preventing shell ringAP PARTS MFG·Filed 1990·Granted Nov 17, 1992·30 cites·17 claims
- 3162US4847965AMethod of manufacturing stamp formed mufflersAP PARTS MFG·Filed 1988·Granted Jul 18, 1989·27 cites·8 claims
- 3260US5042125AApparatus for manufacturing stamp formed mufflersAP PARTS MFG·Filed 1990·Granted Aug 27, 1991·29 cites·14 claims
- 3357US4712295AClamp apparatusAP IND INC·Filed 1986·Granted Dec 15, 1987·16 cites·9 claims
- 3456US4777708AMethod for manufacturing an exhaust manifoldAP IND INC·Filed 1987·Granted Oct 18, 1988·24 cites·5 claims
- 3551US5563383AStamp formed muffler with integral evacuation tubeAPPARTS MANUFACTURING COMPANY·Filed 1995·Granted Oct 8, 1996·20 cites·15 claims
- 3650US4924968AStamp formed muffler with reinforced outer shellAP PARTS MFG·Filed 1988·Granted May 15, 1990·17 cites·24 claims
- 3748US4473131AThreaded muffler nipple and bushingAPX GROUP INC·Filed 1982·Granted Sep 25, 1984·16 cites·26 claims
- 3847US5428194ANarrow width stamp formed mufflerAP PARTS MFG·Filed 1993·Granted Jun 27, 1995·19 cites·22 claims
- 3946US5717173AExhaust mufflers with stamp formed internal components and method of manufactureAP PARTS MFG·Filed 1996·Granted Feb 10, 1998·15 cites·7 claims
- 4045US5907904AMethod of manufacturing an exhaust muffler with stamp formed internal componentsAP PARTS MFG·Filed 1997·Granted Jun 1, 1999·14 cites·5 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →