Assignee
NELSON IND INC
US·106 granted patents·7,767 citations·filing 1975–2002
Top patents by PatentIndex Score
106 records- 0199US4608160ASystem for separating liquidsNELSON IND INC·Filed 1984·Granted Aug 26, 1986·256 cites·5 claims
- 0298US6641637B2Additional flow filterNELSON IND INC·Filed 2002·Granted Nov 4, 2003·164 cites·7 claims
- 0398US6511599B2Multi-element cylindrical filter with equalized flowNELSON IND INC·Filed 2000·Granted Jan 28, 2003·250 cites·20 claims
- 0498US6416561B1Open flow filter with safety elementNELSON IND INC·Filed 2000·Granted Jul 9, 2002·269 cites·41 claims
- 0598US6398832B2High flow capacity filterNELSON IND INC·Filed 2001·Granted Jun 4, 2002·137 cites·34 claims
- 0698US6391076B1Full flow filterNELSON IND INC·Filed 2000·Granted May 21, 2002·197 cites·18 claims
- 0798US6261334B1High flow capacity filterNELSON IND INC·Filed 2000·Granted Jul 17, 2001·166 cites·17 claims
- 0898US6149700AIncreased flow capacity filterNELSON IND INC·Filed 1999·Granted Nov 21, 2000·278 cites·29 claims
- 0998US4677676AActive attenuation system with on-line modeling of speaker, error path and feedback packNELSON IND INC·Filed 1986·Granted Jun 30, 1987·199 cites·25 claims
- 1098US4209493ACombination catalytic converter and muffler for an exhaust systemNELSON IND INC·Filed 1979·Granted Jun 24, 1980·103 cites·10 claims
- 1197US6568540B1Low force closure filter with integral sealNELSON IND INC·Filed 2000·Granted May 27, 2003·136 cites·2 claims
- 1297US6482247B2Multi-panel fluid filter with equalized contaminant passagesNELSON IND INC·Filed 2000·Granted Nov 19, 2002·214 cites·12 claims
- 1397US6375700B1Direct flow filterNELSON IND INC·Filed 2000·Granted Apr 23, 2002·207 cites·25 claims
- 1497US6290738B1Inertial gas-liquid separator having an inertial collector spaced from a nozzle structureNELSON IND INC·Filed 1999·Granted Sep 18, 2001·179 cites·26 claims
- 1597US5968371ALubricant circulation diagnostic and modeling systemNELSON IND INC·Filed 1998·Granted Oct 19, 1999·134 cites·29 claims
- 1697US4665549AHybrid active silencerNELSON IND INC·Filed 1985·Granted May 12, 1987·139 cites·23 claims
- 1797US4253954ATwo-stage spin-on separating deviceNELSON IND INC·Filed 1979·Granted Mar 3, 1981·129 cites·2 claims
- 1896US6478019B2Flat low profile diesel engine crankcase ventilation filterNELSON IND INC·Filed 2001·Granted Nov 12, 2002·117 cites·52 claims
- 1996US6306193B1Increased flow capacity filterNELSON IND INC·Filed 2000·Granted Oct 23, 2001·95 cites·8 claims
- 2096US4677677AActive sound attenuation system with on-line adaptive feedback cancellationNELSON IND INC·Filed 1985·Granted Jun 30, 1987·136 cites·20 claims
- 2195US6709575B1Extended life combination filterNELSON IND INC·Filed 2000·Granted Mar 23, 2004·89 cites·8 claims
- 2295US6436162B1Twist and lock filter housing with anti-rotation stopNELSON IND INC·Filed 2000·Granted Aug 20, 2002·111 cites·12 claims
- 2395US6402798B1Twist and lock filter housing with nontorsional anti-rotation stopNELSON IND INC·Filed 2000·Granted Jun 11, 2002·235 cites·20 claims
- 2495US6383244B1Filter with retained safety elementNELSON IND INC·Filed 2000·Granted May 7, 2002·140 cites·11 claims
- 2595US5033082ACommunication system with active noise cancellationNELSON IND INC·Filed 1989·Granted Jul 16, 1991·122 cites·39 claims
- 2695US4147230ACombination spark arrestor and aspirating mufflerNELSON IND INC·Filed 1978·Granted Apr 3, 1979·151 cites·11 claims
- 2794US6238561B1Corrugated axial filter with simple fold pattern and method of making itNELSON IND INC·Filed 1999·Granted May 29, 2001·142 cites·10 claims
- 2894US4878929ALiquid-gas separatorNELSON IND INC·Filed 1989·Granted Nov 7, 1989·145 cites·12 claims
- 2993US5882367ARotatable sealed filter outletNELSON IND INC·Filed 1997·Granted Mar 16, 1999·105 cites·26 claims
- 3092US6478018B2Multi-peripheral perimeter sealed flat panel coalescing filter elementNELSON IND INC·Filed 2001·Granted Nov 12, 2002·88 cites·38 claims
- 3191US5858224AFilter with pressure sensor mounted in housing endNELSON IND INC·Filed 1997·Granted Jan 12, 1999·96 cites·17 claims
- 3291US5278913AActive acoustic attenuation system with power limitingNELSON IND INC·Filed 1992·Granted Jan 11, 1994·123 cites·29 claims
- 3391US4837834AActive acoustic attenuation system with differential filteringNELSON IND INC·Filed 1988·Granted Jun 6, 1989·82 cites·36 claims
- 3491US4487289AExhaust muffler with protective shieldNELSON IND INC·Filed 1982·Granted Dec 11, 1984·105 cites·11 claims
- 3591US4388091AAir cleaner having a dust dumping valveNELSON IND INC·Filed 1981·Granted Jun 14, 1983·75 cites·9 claims
- 3690US6569219B1Air filter with serviceable filter mediaNELSON IND INC·Filed 2001·Granted May 27, 2003·71 cites·36 claims
- 3790US4815139AActive acoustic attenuation system for higher order mode non-uniform sound field in a ductNELSON IND INC·Filed 1988·Granted Mar 21, 1989·82 cites·38 claims
- 3889US4482368AAir cleaning assembly including a fastening assembly having a novel wing nut constructionNELSON IND INC·Filed 1983·Granted Nov 13, 1984·80 cites·11 claims
- 3989US4011922AMuffler constructionNELSON IND INC·Filed 1975·Granted Mar 15, 1977·47 cites·11 claims
- 4088US6247463B1Diesel engine crankcase ventilation filterNELSON IND INC·Filed 1999·Granted Jun 19, 2001·101 cites·32 claims
- 4188US5930371ATunable acoustic systemNELSON IND INC·Filed 1997·Granted Jul 27, 1999·83 cites·29 claims
- 4287US4707166AAir dryer for air brake systemNELSON IND INC·Filed 1986·Granted Nov 17, 1987·31 cites·12 claims
- 4386US4736431AActive attenuation system with increased dynamic rangeNELSON IND INC·Filed 1986·Granted Apr 5, 1988·85 cites·21 claims
- 4485US6457553B1Low cost mufflerNELSON IND INC·Filed 2000·Granted Oct 1, 2002·38 cites·22 claims
- 4585US5462679AApparatus and method for in situ cleaning of oil filterNELSON IND INC·Filed 1993·Granted Oct 31, 1995·61 cites·10 claims
- 4684US6540046B1Compact economical spark arrestor and mufflerNELSON IND INC·Filed 2001·Granted Apr 1, 2003·48 cites·6 claims
- 4784US6422395B1Filter with preferential fluid affinityNELSON IND INC·Filed 2000·Granted Jul 23, 2002·43 cites·7 claims
- 4884US4735720APleated filter element having improved side seam sealNELSON IND INC·Filed 1986·Granted Apr 5, 1988·66 cites·4 claims
- 4982US5859393AReduced cost vent silencerNELSON IND INC·Filed 1997·Granted Jan 12, 1999·83 cites·11 claims
- 5082US5779900AIn-situ cleanable filter with filtered cleanserNELSON IND INC·Filed 1996·Granted Jul 14, 1998·58 cites·56 claims
Showing the top 50 of 106 patent records by PatentIndex Score.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →