Assignee
TOCHIGI FUJI SANGYO KK
JP·139 granted patents·7 pending applications·4,480 citations·filing 1978–2009
Top patents by PatentIndex Score
146 records- 0199US5098360ADifferential gear with limited slip and locking mechanismTOCHIGI FUJI SANGYO KK·Filed 1989·Granted Mar 24, 1992·1.1k cites·6 claims
- 0298US7325664B2Electromagnetic actuator, and electromagnetic clutch and differential using the sameTOCHIGI FUJI SANGYO KK·Filed 2005·Granted Feb 5, 2008·49 cites·11 claims
- 0398US4805486ALocking differential gear assemblyTOCHIGI FUJI SANGYO KK·Filed 1987·Granted Feb 21, 1989·177 cites·5 claims
- 0497US5366421ADifferential apparatusTOCHIGI FUJI SANGYO KK·Filed 1993·Granted Nov 22, 1994·77 cites·6 claims
- 0597US5125876ADifferential gear with limited slip and lockup clutchesTOCHIGI FUJI SANGYO KK·Filed 1991·Granted Jun 30, 1992·77 cites·4 claims
- 0696US5904634ADifferential apparatus with additional speed increasing gear and speed decreasing gear selectively engageable with a single output shaftTOCHIGI FUJI SANGYO KK·Filed 1997·Granted May 18, 1999·77 cites·9 claims
- 0795US6945895B2Differential gear mechanismTOCHIGI FUJI SANGYO KK·Filed 2002·Granted Sep 20, 2005·54 cites·15 claims
- 0895US5458547ADifferential apparatus with speed and torque sensitive differential limiting forcesTOCHIGI FUJI SANGYO KK·Filed 1993·Granted Oct 17, 1995·75 cites·5 claims
- 0995US5083986ACoupling apparatus with double clutchesTOCHIGI FUJI SANGYO KK·Filed 1990·Granted Jan 28, 1992·69 cites·5 claims
- 1094US6436002B1Differential apparatusTOCHIGI FUJI SANGYO KK·Filed 2000·Granted Aug 20, 2002·64 cites·16 claims
- 1194US4811824AHub clutchTOCHIGI FUJI SANGYO KK·Filed 1987·Granted Mar 14, 1989·54 cites·7 claims
- 1293US7223191B2Power transmission system and operation method thereofTOCHIGI FUJI SANGYO KK·Filed 2006·Granted May 29, 2007·27 cites·4 claims
- 1393US6027422ASwitching synchronous apparatus for four wheel drive vehicleTOCHIGI FUJI SANGYO KK·Filed 1998·Granted Feb 22, 2000·55 cites·14 claims
- 1492US6796412B2Differential apparatusTOCHIGI FUJI SANGYO KK·Filed 2002·Granted Sep 28, 2004·38 cites·24 claims
- 1592US4899859APower transmission apparatusTOCHIGI FUJI SANGYO KK·Filed 1988·Granted Feb 13, 1990·39 cites·3 claims
- 1692US4667534ALimited slip differential gear mechanismTOCHIGI FUJI SANGYO KK·Filed 1985·Granted May 26, 1987·53 cites·5 claims
- 1791US7086978B2Power transmission system and operation method thereforTOCHIGI FUJI SANGYO KK·Filed 2004·Granted Aug 8, 2006·45 cites·2 claims
- 1891US6770005B2Power transmission system and operation method thereforTOCHIGI FUJI SANGYO KK·Filed 2001·Granted Aug 3, 2004·78 cites·4 claims
- 1991US5086867APower transmission apparatusTOCHIGI FUJI SANGYO KK·Filed 1989·Granted Feb 11, 1992·45 cites·1 claims
- 2089US6331103B1Fluid machine having a pair of rotors and a silencerTOCHIGI FUJI SANGYO KK·Filed 1999·Granted Dec 18, 2001·49 cites·9 claims
- 2189US5326333ADifferential apparatus with carrier axially movable relative to an output hubTOCHIGI FUJI SANGYO KK·Filed 1992·Granted Jul 5, 1994·54 cites·6 claims
- 2289US5269730ADifferential gear device for vehicleTOCHIGI FUJI SANGYO KK·Filed 1992·Granted Dec 14, 1993·44 cites·4 claims
- 2388US7354374B2Differential unitTOCHIGI FUJI SANGYO KK·Filed 2005·Granted Apr 8, 2008·15 cites·13 claims
- 2488US6413183B1Power transmission apparatusTOCHIGI FUJI SANGYO KK·Filed 2000·Granted Jul 2, 2002·52 cites·20 claims
- 2587US6698562B2Coupling for vehicleTOCHIGI FUJI SANGYO KK·Filed 2001·Granted Mar 2, 2004·23 cites·10 claims
- 2687US5156578ADifferential gear device for vehicleTOCHIGI FUJI SANGYO KK·Filed 1991·Granted Oct 20, 1992·41 cites·4 claims
- 2786US6832972B2Differential and differential systemTOCHIGI FUJI SANGYO KK·Filed 2001·Granted Dec 21, 2004·23 cites·18 claims
- 2886US6446772B1CouplingTOCHIGI FUJI SANGYO KK·Filed 2000·Granted Sep 10, 2002·23 cites·20 claims
- 2986US4960192AHub clutchTOCHIGI FUJI SANGYO KK·Filed 1989·Granted Oct 2, 1990·47 cites·4 claims
- 3085US5910064ADifferential apparatusTOCHIGI FUJI SANGYO KK·Filed 1998·Granted Jun 8, 1999·104 cites·8 claims
- 3184US7081065B2Differential apparatusTOCHIGI FUJI SANGYO KK·Filed 2004·Granted Jul 25, 2006·25 cites·18 claims
- 3284US6966863B2ActuatorTOCHIGI FUJI SANGYO KK·Filed 2003·Granted Nov 22, 2005·29 cites·32 claims
- 3383US6959799B2Actuator and intermissive power transmission device therewithTOCHIGI FUJI SANGYO KK·Filed 2003·Granted Nov 1, 2005·25 cites·16 claims
- 3483US6015361ADifferential apparatus with two wheel/four wheel drive switching mechanismTOCHIGI FUJI SANGYO KK·Filed 1997·Granted Jan 18, 2000·42 cites·8 claims
- 3583US5749801ADifferential unitTOCHIGI FUJI SANGYO KK·Filed 1996·Granted May 12, 1998·36 cites·20 claims
- 3683US4735108APower transmission deviceTOCHIGI FUJI SANGYO KK·Filed 1985·Granted Apr 5, 1988·29 cites·3 claims
- 3781US7063193B2Seal structure for relatively rotational membersTOCHIGI FUJI SANGYO KK·Filed 2002·Granted Jun 20, 2006·17 cites·19 claims
- 3881US6997294B2Electromagnetic clutch deviceTOCHIGI FUJI SANGYO KK·Filed 2003·Granted Feb 14, 2006·17 cites·20 claims
- 3981US6793603B2Power transmission system with sub transmission mechanismTOCHIGI FUJI SANGYO KK·Filed 2002·Granted Sep 21, 2004·32 cites·13 claims
- 4081US5141088AHub clutch deviceTOCHIGI FUJI SANGYO KK·Filed 1991·Granted Aug 25, 1992·43 cites·6 claims
- 4180US7452299B2Coupling apparatusTOCHIGI FUJI SANGYO KK·Filed 2005·Granted Nov 18, 2008·9 cites·13 claims
- 4280US7094172B2Differential and differential systemTOCHIGI FUJI SANGYO KK·Filed 2004·Granted Aug 22, 2006·17 cites·18 claims
- 4380US5709627ADifferential unit with means for mixing air into the hydraulic actuatorTOCHIGI FUJI SANGYO KK·Filed 1996·Granted Jan 20, 1998·31 cites·5 claims
- 4480US5007515AViscous coupling apparatusTOCHIGI FUJI SANGYO KK·Filed 1989·Granted Apr 16, 1991·24 cites·5 claims
- 4579US7464626B2Torque transmission apparatus and case structureTOCHIGI FUJI SANGYO KK·Filed 2007·Granted Dec 16, 2008·9 cites·10 claims
- 4679US5361744ASupercharging device for an internal combustion engineTOCHIGI FUJI SANGYO KK·Filed 1993·Granted Nov 8, 1994·33 cites·5 claims
- 4778US7455612B2Rotatively driving apparatusTOCHIGI FUJI SANGYO KK·Filed 2005·Granted Nov 25, 2008·12 cites·16 claims
- 4878US7216751B2Torque transmission couplingTOCHIGI FUJI SANGYO KK·Filed 2004·Granted May 15, 2007·18 cites·8 claims
- 4978US6837821B2DifferentialTOCHIGI FUJI SANGYO KK·Filed 2003·Granted Jan 4, 2005·22 cites·8 claims
- 5078US5879259ATransmission for an auxiliary deviceTOCHIGI FUJI SANGYO KK·Filed 1997·Granted Mar 9, 1999·29 cites·7 claims
Showing the top 50 of 146 patent records by PatentIndex Score.
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