Inventor · disambiguated record
Isamu Chikuma
Also filed as: CHIKUMA ISAMU
26 granted patents·566 citations·filing 1984–2002
97Inventor score
Top patents by PatentIndex Score
26 records- 0191US6711965B2Electric steering column apparatusNSK LTD·Filed 2002·Granted Mar 30, 2004·46 cites·12 claims
- 0288US4724717ARack shaft supporting deviceNIPPON SEIKO KK·Filed 1986·Granted Feb 16, 1988·51 cites·8 claims
- 0380US5685390AElectrically-operated power steering apparatusNSK LTD·Filed 1995·Granted Nov 11, 1997·46 cites·6 claims
- 0479US5445237AElectric power steering apparatusNSK LTD·Filed 1994·Granted Aug 29, 1995·31 cites·3 claims
- 0579US4572316AFour-wheel steering system for vehicleMAZDA MOTOR·Filed 1985·Granted Feb 25, 1986·41 cites·17 claims
- 0677US5732790AElectric power steering apparatusNSK LTD·Filed 1995·Granted Mar 31, 1998·44 cites·5 claims
- 0774US4621702AFour-wheel steering apparatus of a vehicleMAZDA MOTOR·Filed 1984·Granted Nov 11, 1986·26 cites·5 claims
- 0873US5508921AFour wheel steering apparatusNSK LTD·Filed 1995·Granted Apr 16, 1996·41 cites·5 claims
- 0971US4834201AElectrical power steering apparatusNIPPON SEIKO KK·Filed 1988·Granted May 30, 1989·25 cites·5 claims
- 1071US4730687ASteering force control device for power steering systemNIPPON SEIKO KK·Filed 1985·Granted Mar 15, 1988·26 cites·22 claims
- 1166US4601357AFour-wheel steering system for vehicleMAZADA MOTOR CORP·Filed 1985·Granted Jul 22, 1986·23 cites·17 claims
- 1263US5295550AFour-wheel steering apparatusNSK LTD·Filed 1991·Granted Mar 22, 1994·24 cites·13 claims
- 1354US5454438AElectric power steering systemNSK LTD·Filed 1994·Granted Oct 3, 1995·17 cites·13 claims
- 1453US4646867AFour-wheel steering system for vehicleMAZDA MOTOR·Filed 1985·Granted Mar 3, 1987·14 cites·11 claims
- 1552US4732231AVehicle four wheel steering systemMAZDA MOTOR·Filed 1986·Granted Mar 22, 1988·14 cites·13 claims
- 1647US4610328AFour-wheel steering system for vehicleMAZDA MOTOR·Filed 1985·Granted Sep 9, 1986·11 cites·6 claims
- 1745US4874183AFour-wheel steering apparatus of a vehicleNIPPON SEIKO KK·Filed 1988·Granted Oct 17, 1989·10 cites·6 claims
- 1844US5445238AElectric power steering apparatusNSK LTD·Filed 1995·Granted Aug 29, 1995·17 cites·1 claims
- 1944US5248009AVehicle rear wheels steering apparatusNSK LTD·Filed 1991·Granted Sep 28, 1993·12 cites·6 claims
- 2043US6237954B1Apparatus for supporting a steering columnNSK LTD·Filed 1999·Granted May 29, 2001·11 cites·24 claims
- 2138US5048852AFour-wheel steering apparatusNIPPON SEIKO KK·Filed 1989·Granted Sep 17, 1991·6 cites·30 claims
- 2237US5236057ARear wheel steering apparatus for vehicleNSK LTD·Filed 1991·Granted Aug 17, 1993·7 cites·12 claims
- 2335US6237955B1Shock absorbing type steering column apparatusNSK LTD·Filed 1999·Granted May 29, 2001·6 cites·2 claims
- 2435US5147009ASteering force control apparatus of power steering systemNIPPON SEIKO KK·Filed 1991·Granted Sep 15, 1992·6 cites·4 claims
- 2534US5482127AElectric power steering deviceNSK LTD·Filed 1994·Granted Jan 9, 1996·8 cites·3 claims
- 2630US4982804AVehicle steering systemMAZDA MOTOR·Filed 1989·Granted Jan 8, 1991·3 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →