Assignee
ONAN CORP
US·68 granted patents·3,113 citations·filing 1983–2002
Top patents by PatentIndex Score
68 records- 0198US5390068AMicroprocessor based integrated generator set controller apparatus and methodONAN CORP·Filed 1992·Granted Feb 14, 1995·161 cites·13 claims
- 0298US5168208AMicroprocessor based integrated generator set controller apparatus and methodONAN CORP·Filed 1991·Granted Dec 1, 1992·230 cites·5 claims
- 0397US5433175AGenerator air flow and noise management system and methodONAN CORP·Filed 1993·Granted Jul 18, 1995·131 cites·22 claims
- 0497US5006781AMicroprocessor based integrated generator set controller apparatus and methodONAN CORP·Filed 1988·Granted Apr 9, 1991·105 cites·18 claims
- 0596US4835405AGenerator set and methodONAN CORP·Filed 1987·Granted May 30, 1989·205 cites·20 claims
- 0695US6965818B2Mobile energy management systemONAN CORP·Filed 2001·Granted Nov 15, 2005·102 cites·13 claims
- 0795US6639331B2Parallel generator power systemONAN CORP·Filed 2001·Granted Oct 28, 2003·77 cites·17 claims
- 0893US6737762B2Generator with DC boost for uninterruptible power supply system or for enhanced load pickupONAN CORP·Filed 2001·Granted May 18, 2004·131 cites·52 claims
- 0992US6765157B2Transfer switch with improved actuatorONAN CORP·Filed 2002·Granted Jul 20, 2004·73 cites·29 claims
- 1092US5333678AAuxiliary power unitONAN CORP·Filed 1992·Granted Aug 2, 1994·229 cites·22 claims
- 1192US5125236ACombined generator set and air conditioning compressor drive systemONAN CORP·Filed 1991·Granted Jun 30, 1992·87 cites·15 claims
- 1289US5563802AGenerator power system and methodONAN CORP·Filed 1996·Granted Oct 8, 1996·176 cites·20 claims
- 1386US6534737B1Contact closing speed limiter for a transfer switchONAN CORP·Filed 2002·Granted Mar 18, 2003·34 cites·18 claims
- 1485US5069180AAutomatic choke apparatus and methodONAN CORP·Filed 1990·Granted Dec 3, 1991·52 cites·21 claims
- 1584US5619956AAuxiliary power unit for hybrid electric vehicleONAN CORP·Filed 1995·Granted Apr 15, 1997·56 cites·29 claims
- 1682US6355986B1Generator set control apparatus and method to avoid vehicle resonancesONAN CORP·Filed 2000·Granted Mar 12, 2002·37 cites·27 claims
- 1782US5469820AAuxiliary power unit for a hybrid electrical vehicleONAN CORP·Filed 1995·Granted Nov 28, 1995·48 cites·3 claims
- 1882USD309288SGenerator set enclosureONAN CORP·Filed 1987·Granted Jul 17, 1990·26 cites·1 claims
- 1982US4912382AFail safe monitoring apparatus and methodONAN CORP·Filed 1988·Granted Mar 27, 1990·44 cites·9 claims
- 2081US5368000AEngine efficiency improvement systemONAN CORP·Filed 1993·Granted Nov 29, 1994·41 cites·9 claims
- 2180US6919518B2Phase flux barriers for transfer switchONAN CORP·Filed 2002·Granted Jul 19, 2005·24 cites·14 claims
- 2280US5784267AQuasi-sine wave and stepped square wave AC to AC converterONAN CORP·Filed 1996·Granted Jul 21, 1998·64 cites·38 claims
- 2379US5293145ASwitch battery charger with reduced electromagnetic emissionONAN CORP·Filed 1993·Granted Mar 8, 1994·34 cites·3 claims
- 2478US6798627B2Engine generator set systems and methods providing load power fault protectionONAN CORP·Filed 2002·Granted Sep 28, 2004·33 cites·22 claims
- 2578US5297025APower supply assemblyONAN CORP·Filed 1992·Granted Mar 22, 1994·58 cites·23 claims
- 2677US5717273AInsulating armature end turn capONAN CORP·Filed 1996·Granted Feb 10, 1998·53 cites·11 claims
- 2776US5701070AElectrical generator damage protection apparatus and method with circuit breaker trip initiationONAN CORP·Filed 1995·Granted Dec 23, 1997·43 cites·35 claims
- 2876US5606946AAuxiliary power unit for a hybrid electric vehicleONAN CORP·Filed 1995·Granted Mar 4, 1997·39 cites·7 claims
- 2975USD287716SCombined rotor and stator laminationONAN CORP·Filed 1983·Granted Jan 13, 1987·23 cites·1 claims
- 3074US4999598AThree-position actuating mechanism for transfer switchONAN CORP·Filed 1989·Granted Mar 12, 1991·28 cites·10 claims
- 3173US5638948AElectric transfer switch having three-position toggle mechanismONAN CORP·Filed 1995·Granted Jun 17, 1997·30 cites·13 claims
- 3273US5238085AEngine oil makeup and extended operation oil exchange systemONAN CORP·Filed 1992·Granted Aug 24, 1993·46 cites·18 claims
- 3372USD331929SShroud for an internal combustion engineONAN CORP·Filed 1989·Granted Dec 22, 1992·19 cites·1 claims
- 3471US4792713ALamination to rotor shaft retention method utilizing spring pinsONAN CORP·Filed 1987·Granted Dec 20, 1988·34 cites·26 claims
- 3569US5096153AShock and vibration mountONAN CORP·Filed 1990·Granted Mar 17, 1992·29 cites·14 claims
- 3669US4836167AEngine governor friction damper and methodONAN CORP·Filed 1987·Granted Jun 6, 1989·18 cites·26 claims
- 3768USD295621SEngine driven generatorONAN CORP·Filed 1985·Granted May 10, 1988·13 cites·1 claims
- 3868US4625123ALoad sensitive fuel cutoff and method to increase engine stabilityONAN CORP·Filed 1984·Granted Nov 25, 1986·24 cites·17 claims
- 3967US5175458AInsulator for terminating electrodynamic stator coilsONAN CORP·Filed 1991·Granted Dec 29, 1992·34 cites·23 claims
- 4067US5144182ASkewed rotor assemblyONAN CORP·Filed 1991·Granted Sep 1, 1992·33 cites·17 claims
- 4167USD303785SEnclosure for an engine driven generator setONAN CORP·Filed 1986·Granted Oct 3, 1989·16 cites·1 claims
- 4265US5515021ASwitching battery charger for reducing electromagnetic emussions having separately-mounted circuit boardsONAN CORP·Filed 1994·Granted May 7, 1996·20 cites·10 claims
- 4364US5652416AMechanically held electrically or manually operated switchONAN CORP·Filed 1995·Granted Jul 29, 1997·20 cites·6 claims
- 4463US4653442AEngine starting cycle and overcrank control systemONAN CORP·Filed 1985·Granted Mar 31, 1987·20 cites·2 claims
- 4562US5003949AGovernor assist mechanismONAN CORP·Filed 1989·Granted Apr 2, 1991·15 cites·16 claims
- 4661US5815058AContact enhancement apparatus for an electric switchONAN CORP·Filed 1997·Granted Sep 29, 1998·19 cites·10 claims
- 4761US5146889AGovernor assist mechanismONAN CORP·Filed 1990·Granted Sep 15, 1992·22 cites·11 claims
- 4860US4793309AEngine governor eddy-current damper mechanism and methodONAN CORP·Filed 1987·Granted Dec 27, 1988·17 cites·13 claims
- 4959US4757602AMethod for installing a collector ring assemblyONAN CORP·Filed 1987·Granted Jul 19, 1988·22 cites·6 claims
- 5057US5274292ACollector ring assembly and methodONAN CORP·Filed 1992·Granted Dec 28, 1993·23 cites·12 claims
Showing the top 50 of 68 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when ONAN CORP files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →