Inventor · disambiguated record
Fumio Nakajima
Also filed as: HIRANO YUTAKA · MACHIDA TAKAYASU · NAKAJIMA FUMIO · YOSHIDA HIROHIKO
37 granted patents·1 pending application·854 citations·filing 1973–2006
98Inventor score
Files withCITIZEN WATCH CO LTD25JIDOSHA DENKI KOGYO KK2SONY CORP2JIDOSA DENKI KOGYO K K1MITSUBA CORP1
Top patents by PatentIndex Score
38 records- 0191US5557168AGas-discharging type display device and a method of manufacturingOKAYA ELECTRIC INDUSTRY CO·Filed 1994·Granted Sep 17, 1996·77 cites·34 claims
- 0289US7623176B2Meta-data display system, meta-data synthesis apparatus, video-signal recording/reproduction apparatus, imaging apparatus and meta-data display methodSONY CORP·Filed 2004·Granted Nov 24, 2009·45 cites·15 claims
- 0387US4150536AElectronic timepieceCITIZEN WATCH CO LTD·Filed 1977·Granted Apr 24, 1979·36 cites·8 claims
- 0486US6151964AAngular velocity sensing deviceCITIZEN WATCH CO LTD·Filed 1999·Granted Nov 28, 2000·117 cites·13 claims
- 0586US4144467APulse motorCITIZEN WATCH CO LTD·Filed 1975·Granted Mar 13, 1979·38 cites·1 claims
- 0684US4048548AStepping motorCITIZEN WATCH CO LTD·Filed 1975·Granted Sep 13, 1977·32 cites·2 claims
- 0783US4066947AStepping motor for electronic timepieceCITIZEN WATCH CO LTD·Filed 1976·Granted Jan 3, 1978·31 cites·6 claims
- 0881US5777411AGeared electric motorJIDOSHA DENKI KOGYO KK·Filed 1996·Granted Jul 7, 1998·37 cites·1 claims
- 0980US4361410ADrive system for pulse motorCITIZEN WATCH CO LTD·Filed 1980·Granted Nov 30, 1982·32 cites·4 claims
- 1078US4158287ADriver circuit for electro-mechanical transducerCITIZEN WATCH CO LTD·Filed 1977·Granted Jun 19, 1979·24 cites·7 claims
- 1175US6540805B2High-performance filter for intake air for gas turbine, and filter unit using such filter for intake air for gas turbineNIPPON MUKI KK·Filed 2001·Granted Apr 1, 2003·24 cites·4 claims
- 1274US4186305AHigh-temperature microscopeUNION OPTICAL CO LTD·Filed 1978·Granted Jan 29, 1980·21 cites·9 claims
- 1372US4584508ARain sensor in an automatic wiper drive control system for an automotive vehicleNISSAN MOTOR·Filed 1984·Granted Apr 22, 1986·23 cites·38 claims
- 1472US4223522AElectronic timepieceCITIZEN WATCH CO LTD·Filed 1978·Granted Sep 23, 1980·17 cites·8 claims
- 1572US4129981AElectronic timepieceCITIZEN WATCH CO LTD·Filed 1977·Granted Dec 19, 1978·17 cites·6 claims
- 1667US4340946AElectronic timepieceCITIZEN WATCH CO LTD·Filed 1980·Granted Jul 20, 1982·21 cites·8 claims
- 1766US7154203B2Motor and brush deviceJIDOSHA DENKI KOGYO KK·Filed 2005·Granted Dec 26, 2006·4 cites·12 claims
- 1864US7501736B2Miniature motorMITSUBA CORP·Filed 2006·Granted Mar 10, 2009·4 cites·20 claims
- 1964US6649853B2Combined type fluid pressure driving apparatusTOSHIBA KK·Filed 2001·Granted Nov 18, 2003·12 cites·15 claims
- 2064US5835457AElectronic watch and method of charging the sameCITIZEN WATCH CO LTD·Filed 1997·Granted Nov 10, 1998·32 cites·22 claims
- 2163US5420548AQuartz crystal oscillator angular velocity detector circuitsCITIZEN WATCH CO LTD·Filed 1994·Granted May 30, 1995·26 cites·6 claims
- 2262US4283783ADrive control system for stepping motorCITIZEN WATCH CO LTD·Filed 1979·Granted Aug 11, 1981·13 cites·39 claims
- 2361US7466352B2Gamma correction device in image capturing apparatusSONY CORP·Filed 2004·Granted Dec 16, 2008·4 cites·12 claims
- 2461US4590529ACarriage device for moving and positioning magnetic headCITIZEN WATCH CO LTD·Filed 1984·Granted May 20, 1986·11 cites·3 claims
- 2561US4055785AStepping motor for electronic timepieceNAKAJIMA FUMIO·Filed 1976·Granted Oct 25, 1977·14 cites·17 claims
- 2660US4179671ACapacitor switching circuits for adjusting crystal oscillator frequencyCITIZEN WATCH CO LTD·Filed 1978·Granted Dec 18, 1979·13 cites·1 claims
- 2758US6205857B1Angular velocity sensing deviceCITIZEN WATCH CO LTD·Filed 1999·Granted Mar 27, 2001·29 cites·6 claims
- 2857US4404510AElectronic timepieceCITIZEN WATCH CO LTD·Filed 1981·Granted Sep 13, 1983·13 cites·5 claims
- 2956US3958167APulse motorCITIZEN WATCH CO LTD·Filed 1973·Granted May 18, 1976·9 cites·5 claims
- 3053US5637937ASuper-miniature motorCITIZEN WATCH CO LTD·Filed 1993·Granted Jun 10, 1997·16 cites·9 claims
- 3148US6147936AElectronic watchCITIZEN WATCH CO LTD·Filed 1997·Granted Nov 14, 2000·14 cites·5 claims
- 3248US5798985AElectronic watch and method of driving the sameCITIZEN WATCH CO LTD·Filed 1996·Granted Aug 25, 1998·14 cites·7 claims
- 3342US5970793AAngular velocity sensor and angular velocity sensing systemCITIZEN WATCH CO LTD·Filed 1997·Granted Oct 26, 1999·11 cites·6 claims
- 3439US4558244AMicro stepping motorCITIZEN WATCH CO LTD·Filed 1984·Granted Dec 10, 1985·8 cites·2 claims
- 3535US2002163280A1Motor and brush deviceFiled 2002·Application pending·0 cites
- 3632US6170330B1Angular velocity sensor and angular velocity sensing systemCITIZEN WATCH CO LTD·Filed 1999·Granted Jan 9, 2001·4 cites·2 claims
- 3732US5105134AWiper apparatus interlocking to washerJIDOSA DENKI KOGYO K K·Filed 1991·Granted Apr 14, 1992·8 cites·1 claims
- 3832US4480216AMotor driving circuitsCITIZEN WATCH CO LTD·Filed 1982·Granted Oct 30, 1984·3 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →