Inventor · disambiguated record
Ryuzo Sakakiyama
Also filed as: SAKAKIYAMA RYUZO
53 granted patents·724 citations·filing 1981–2003
99Inventor score
Files withFUJI HEAVY IND LTD53
Top patents by PatentIndex Score
53 records- 0194US4510903ASystem for regulating the idle speed of an internal combustion engineFUJI HEAVY IND LTD·Filed 1983·Granted Apr 16, 1985·41 cites·10 claims
- 0288US5890991AControl system and method of continuously variable transmissionFUJI HEAVY IND LTD·Filed 1997·Granted Apr 6, 1999·43 cites·15 claims
- 0386US6634451B2Power distribution control system for a vehicleFUJI HEAVY IND LTD·Filed 2001·Granted Oct 21, 2003·48 cites·12 claims
- 0475US4805751ASystem for controlling a clutch for a motor vehicleFUJI HEAVY IND LTD·Filed 1987·Granted Feb 21, 1989·22 cites·5 claims
- 0574US4662496ASystem for controlling the clutch torque of an electromagnetic clutch for vehiclesFUJI HEAVY IND LTD·Filed 1984·Granted May 5, 1987·18 cites·10 claims
- 0674US4586583ASystem for controlling a power transmission of a four-wheel drive vehicleFUJI HEAVY IND LTD·Filed 1984·Granted May 6, 1986·28 cites·3 claims
- 0772US6698541B2Driving force distributing apparatus for a vehicleFUJI HEAVY IND LTD·Filed 2003·Granted Mar 2, 2004·18 cites·6 claims
- 0872US6604595B2Driving force distributing apparatus for a vehicleFUJI HEAVY IND LTD·Filed 2001·Granted Aug 12, 2003·18 cites·12 claims
- 0972US6564139B2Apparatus and method for controlling a four-wheel drive vehicleFUJI HEAVY IND LTD·Filed 2002·Granted May 13, 2003·21 cites·16 claims
- 1072US4630704ASystem for controlling a power transmission of a four-wheel drive vehicleFUJI HEAVY IND LTD·Filed 1984·Granted Dec 23, 1986·26 cites·4 claims
- 1171US5486147AFailure detecting system and method for automatic transmissionFUJI HEAVY IND LTD·Filed 1994·Granted Jan 23, 1996·15 cites·8 claims
- 1270US4558414ASystem for controlling a power transmission of a four-wheel drive vehicleFUJI HEAVY IND LTD·Filed 1983·Granted Dec 10, 1985·22 cites·7 claims
- 1369US4911275ASystem for controlling a clutch for a vehicleFUJI HEAVY IND LTD·Filed 1988·Granted Mar 27, 1990·23 cites·6 claims
- 1468US4576061ASystem for controlling the transmission of a four-wheel drive vehicleFUJI HEAVY IND LTD·Filed 1983·Granted Mar 18, 1986·21 cites·6 claims
- 1568US4562541ASystem for controlling a power transmission of a four-wheel drive vehicleFUJI HEAVY IND LTD·Filed 1983·Granted Dec 31, 1985·23 cites·10 claims
- 1664US4711317ASystem for controlling a transfer clutch of a four-wheel drive vehicleFUJI HEAVY IND LTD·Filed 1986·Granted Dec 8, 1987·21 cites·12 claims
- 1761US5601510AFailure detecting system and method for automatic transmissionFUJI HEAVY IND LTD·Filed 1995·Granted Feb 11, 1997·11 cites·20 claims
- 1860US4723644AElectromagnetic clutch control system for automobilesFUJI HEAVY IND LTD·Filed 1985·Granted Feb 9, 1988·13 cites·4 claims
- 1960US4515257AControl system for an electromagnetic clutch for automobilesFUJI HEAVY IND LTD·Filed 1982·Granted May 7, 1985·12 cites·18 claims
- 2060US4377223AElectro-magnetic clutch control system for automobilesFUJI HEAVY IND LTD·Filed 1981·Granted Mar 22, 1983·14 cites·3 claims
- 2159US5591101AFailure detecting system and method for automatic transmissionFUJI HEAVY IND LTD·Filed 1996·Granted Jan 7, 1997·10 cites·2 claims
- 2259US4494641AElectromagnetic clutch control system for automobilesFUJI HEAVY IND LTD·Filed 1981·Granted Jan 22, 1985·15 cites·7 claims
- 2357US4829852AControl system for an automatic transmissionFUJI HEAVY IND LTD·Filed 1988·Granted May 16, 1989·13 cites·3 claims
- 2456US4494639AElectro-magnetic clutch control system for automobilesFUJI HEAVY IND LTD·Filed 1981·Granted Jan 22, 1985·11 cites·2 claims
- 2554US4823925AControl system for a clutch for a vehicleFUJI HEAVY IND LTD·Filed 1987·Granted Apr 25, 1989·11 cites·11 claims
- 2654US4675817ASystem for controlling an electromagnetic clutch for a vehicleFUJI HEAVY IND LTD·Filed 1985·Granted Jun 23, 1987·16 cites·4 claims
- 2753US4836322APower transmission system for a four-wheel drive vehicleFUJI HEAVY IND LTD·Filed 1988·Granted Jun 6, 1989·14 cites·8 claims
- 2852US4834226AControl system for an electromagnetic clutch for a vehicleFUJI HEAVY IND LTD·Filed 1987·Granted May 30, 1989·10 cites·5 claims
- 2952US4550816ASystem for controlling stall speed for an electromagnetic clutchFUJI HEAVY IND LTD·Filed 1983·Granted Nov 5, 1985·9 cites·16 claims
- 3051US4913270AControl system for an automatic transmission of a motor vehicle with an antilock brake systemFUJI HEAVY IND LTD·Filed 1989·Granted Apr 3, 1990·15 cites·1 claims
- 3150US4669591ASystem for controlling the clutch torque of an electromagnetic clutch for vehiclesFUJI HEAVY IND LTD·Filed 1984·Granted Jun 2, 1987·8 cites·10 claims
- 3249US4730711AElectromagnetic clutch control system for automobilesFUJI HEAVY IND LTD·Filed 1985·Granted Mar 15, 1988·9 cites·10 claims
- 3349US4680712ASystem for controlling an electromagnetic clutch for a vehicleFUJI HEAVY IND LTD·Filed 1985·Granted Jul 14, 1987·9 cites·4 claims
- 3449US4449617AElectro-magnetic clutch control system for automobilesFUJI HEAVY IND LTD·Filed 1981·Granted May 22, 1984·8 cites·18 claims
- 3548US5655408AFailure detecting system and method for automatic transmissionFUJI HEAVY IND LTD·Filed 1995·Granted Aug 12, 1997·12 cites·11 claims
- 3646US4679674ASystem for engaging an electromagnetic clutch upon acceleration of an engineFUJI HEAVY IND LTD·Filed 1984·Granted Jul 14, 1987·7 cites·11 claims
- 3745US4644827AHydraulic control system for an infinitely variable belt-drive transmissionFUJI HEAVY IND LTD·Filed 1984·Granted Feb 24, 1987·8 cites·3 claims
- 3844US4617840ASystem for controlling a power transmission of a four-wheel drive vehicleFUJI HEAVY IND LTD·Filed 1983·Granted Oct 21, 1986·10 cites·11 claims
- 3940US4449620AElectromagnetic clutch control system for vehiclesFUJI HEAVY IND LTD·Filed 1981·Granted May 22, 1984·5 cites·3 claims
- 4039US4674610ASystem for decreasing clutch current during a change of range in an infinitely variable transmissionFUJI HEAVY IND LTD·Filed 1985·Granted Jun 23, 1987·5 cites·10 claims
- 4139US4484672ASystem for controlling an electro-magnetic clutch for automobilesFUJI HEAVY IND LTD·Filed 1981·Granted Nov 27, 1984·5 cites·12 claims
- 4238US4831896ALine pressure control system for an automatic transmissionFUJI HEAVY IND LTD·Filed 1987·Granted May 23, 1989·9 cites·4 claims
- 4338US4674611ASystem for controlling the clutch current of an electromagnetic clutch for vehiclesFUJI HEAVY IND LTD·Filed 1984·Granted Jun 23, 1987·4 cites·6 claims
- 4438US4660699ASystem for controlling the clutch torque of an electromagnetic clutch for vehiclesFUJI HEAVY IND LTD·Filed 1984·Granted Apr 28, 1987·4 cites·6 claims
- 4537US4449619ASystem for controlling an electromagnetic clutch for automobilesFUJI HEAVY IND LTD·Filed 1981·Granted May 22, 1984·4 cites·13 claims
- 4636US5573475AFailure detecting system and method for automatic transmissionFUJI HEAVY IND LTD·Filed 1995·Granted Nov 12, 1996·5 cites·14 claims
- 4735US4675818ASystem for controlling an electromagnetic clutch for an automotive engineFUJI HEAVY IND LTD·Filed 1985·Granted Jun 23, 1987·4 cites·6 claims
- 4834US4804059ASystem for controlling a transfer clutch of a four-wheel drive vehicleFUJI HEAVY IND LTD·Filed 1987·Granted Feb 14, 1989·6 cites·8 claims
- 4933US4848544AControl system for a clutch for a vehicleFUJI HEAVY IND LTD·Filed 1987·Granted Jul 18, 1989·5 cites·6 claims
- 5033US4657123ASystem for engaging an electromagnetic clutch during range change operationFUJI HEAVY IND LTD·Filed 1985·Granted Apr 14, 1987·5 cites·13 claims
Showing the top 50 of 53 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →