Inventor · disambiguated record
Koichi Futsuhara
Also filed as: FUTSUHARA KOICHI
56 granted patents·844 citations·filing 1985–2011
99Inventor score
Files withNIPPON SIGNAL CO LTD46NIHON SHINGO KABUSHIKI KAISHA4KAO CORP2HIRAO YUJI1KAWASHIMA KIROSHI1
Top patents by PatentIndex Score
56 records- 0191US5345138AMethod and apparatus for assuring safe workNIPPON SIGNAL CO LTD·Filed 1991·Granted Sep 6, 1994·84 cites·9 claims
- 0287US5027114AGround guidance system for airplanesKAWASHIMA KIROSHI·Filed 1987·Granted Jun 25, 1991·101 cites·36 claims
- 0386US4757417AMonitoring system for load-driving switch circuitsNIPPON SIGNAL CO LTD·Filed 1985·Granted Jul 12, 1988·38 cites·20 claims
- 0484US4661880AFailsafe monitoring system with input controlled switch circuitsNIPPON SIGNAL CO LTD·Filed 1985·Granted Apr 28, 1987·44 cites·9 claims
- 0581US5442303AElectromagnetically coupled fail-safe logic circuitNIPPON SIGNAL CO LTD·Filed 1992·Granted Aug 15, 1995·34 cites·15 claims
- 0679US6047634AFail-safe automatic sliding operation control apparatus for pressNIPPON SIGNAL CO LTD·Filed 1997·Granted Apr 11, 2000·28 cites·28 claims
- 0774US5798703AMat sensorNIPPON SIGNAL CO LTD·Filed 1996·Granted Aug 25, 1998·32 cites·39 claims
- 0868US6434025B2Power supply unitNIPPON SIGNAL CO LTD·Filed 1999·Granted Aug 13, 2002·37 cites·44 claims
- 0965US5508697AAirplane detection systemNIPPON SIGNAL CO LTD·Filed 1992·Granted Apr 16, 1996·17 cites·8 claims
- 1062US5574320ALoad drive circuitNIPPON SIGNAL CO LTD·Filed 1993·Granted Nov 12, 1996·16 cites·10 claims
- 1161US6292524B1Counting apparatus and rotation stopped detection apparatus which uses a counting apparatusNIPPON SIGNAL CO LTD·Filed 2000·Granted Sep 18, 2001·7 cites·5 claims
- 1261US6034449ALoad drive circuitNIPPON SIGNAL CO LTD·Filed 1997·Granted Mar 7, 2000·14 cites·7 claims
- 1361US5619110ASafety ensuring apparatusKAO CORP·Filed 1993·Granted Apr 8, 1997·22 cites·12 claims
- 1458US6504485B2Monitoring apparatus and control apparatus for traffic signal lightsNIPPON SIGNAL CO LTD·Filed 2001·Granted Jan 7, 2003·17 cites·41 claims
- 1558US6148055ACounter and a revolution stop detection apparatus using the counterNIPPON SIGNAL CO LTD·Filed 1996·Granted Nov 14, 2000·16 cites·10 claims
- 1658US4667184AApparatus for counting enumeration input pulsesNIPPON SIGNAL CO LTD·Filed 1985·Granted May 19, 1987·12 cites·21 claims
- 1755US5495228AFail-safe scan circuit and a multibeam sensorNIPPON SIGNAL CO LTD·Filed 1993·Granted Feb 27, 1996·17 cites·15 claims
- 1853US5668706ALoad driving circuitNIPPON SIGNAL CO LTD·Filed 1996·Granted Sep 16, 1997·11 cites·9 claims
- 1952US8564388B2Relay, control circuit, and method for controlling control circuitHIRAO YUJI·Filed 2011·Granted Oct 22, 2013·1 cites·4 claims
- 2052US5568131AMotor rotation judgement circuit and apparatus using such circuit for verifying that a motor is stoppedNIPPON SIGNAL CO LTD·Filed 1993·Granted Oct 22, 1996·14 cites·15 claims
- 2152US5519598ALoad driving circuitNIPPON SIGNAL CO LTD·Filed 1993·Granted May 21, 1996·10 cites·3 claims
- 2251US6002249ARotation detection sensorNIPPON SIGNAL CO LTD·Filed 1996·Granted Dec 14, 1999·13 cites·9 claims
- 2351US5793197AApparatus for confirming stop of movable portionNIPPON SIGNAL CO LTD·Filed 1995·Granted Aug 11, 1998·10 cites·17 claims
- 2450US5768077AEarthing wire disconnection detection apparatus and leakage detection apparatus having an earthing wire disconnection detection function conductorNIPPON SIGNAL CO LTD·Filed 1996·Granted Jun 16, 1998·15 cites·18 claims
- 2549US5432337AFail-safe scanning circuit and multi-axis light beam-type sensorNIPPON SIGNAL CO LTD·Filed 1992·Granted Jul 11, 1995·9 cites·9 claims
- 2648US6031790AInformation generator using elastic waveNIPPON SIGNAL CO LTD·Filed 1997·Granted Feb 29, 2000·12 cites·15 claims
- 2748US5861813ASafety securing deviceNIPPON SIGNAL CO LTD·Filed 1995·Granted Jan 19, 1999·11 cites·5 claims
- 2847US6046834AOptical barrierNIHON SHINGO KABUSHIKI KAISHA·Filed 1997·Granted Apr 4, 2000·14 cites·5 claims
- 2947US5717302AMotor stopped verification apparatusNIPPON SIGNAL CO LTD·Filed 1994·Granted Feb 10, 1998·12 cites·16 claims
- 3046US6292432B1Information generating apparatus using elastic wavesNIPPON SIGNAL CO LTD·Filed 1999·Granted Sep 18, 2001·11 cites·15 claims
- 3146US6246503B1Optical barrier apparatusNIHON SHINGO KABUSHIKI KAISHA·Filed 2000·Granted Jun 12, 2001·5 cites·3 claims
- 3245US6334077B1Operation apparatus for pressNIPPON SIGNAL CO LTD·Filed 1998·Granted Dec 25, 2001·6 cites·20 claims
- 3345US6272001B1Emergency stop switch and emergency stop switch circuitNIPPON SIGNAL CO LTD·Filed 1997·Granted Aug 7, 2001·8 cites·14 claims
- 3445US6185028B1Optical barrier apparatusNIHON SHINGO KABUSHIKI KAISHA·Filed 2000·Granted Feb 6, 2001·4 cites·3 claims
- 3545US6178027B1Optical barrier apparatusNIHON SHINGO KABUSHIKI KAISHA·Filed 2000·Granted Jan 23, 2001·4 cites·1 claims
- 3644US6459656B1Information generating apparatus using elastic wavesNIPPON SIGNAL CO LTD·Filed 2001·Granted Oct 1, 2002·5 cites·12 claims
- 3744US5734269ABridge circuit fault monitoring apparatus using an output signal level from a bridge circuit and a power source current level to determine faultsNIPPON SIGNAL CO LTD·Filed 1994·Granted Mar 31, 1998·9 cites·7 claims
- 3844US5285721ASlide operation control device for a pressNIPPON SIGNAL CO LTD·Filed 1993·Granted Feb 15, 1994·9 cites·7 claims
- 3941US6657762B2Optical barrier deviceNIPPON SIGNAL CO LTD·Filed 2000·Granted Dec 2, 2003·4 cites·18 claims
- 4041US5818681AElectromagnetic relay drive circuitNIPPON SIGNAL CO LTD·Filed 1996·Granted Oct 6, 1998·7 cites·9 claims
- 4141US5675317AResidual pressure sensor and residual pressure sensor monitoring apparatusNAGANO KEIKI SEISAKUSHO KK·Filed 1994·Granted Oct 7, 1997·9 cites·23 claims
- 4241US5105124ALamp failure detecting deviceNIPPON SIGNAL CO LTD·Filed 1989·Granted Apr 14, 1992·7 cites·12 claims
- 4340US6239956B1Fail-safe timing circuit and on-delay circuit using the sameNIPPON SIGNAL CO LTD·Filed 1996·Granted May 29, 2001·5 cites·13 claims
- 4440US5903517AMoving body control apparatusNIPPON SIGNAL CO LTD·Filed 1997·Granted May 11, 1999·8 cites·12 claims
- 4540US5703452ASafety ensuring apparatusNIPPON SIGNAL CO LTD·Filed 1995·Granted Dec 30, 1997·8 cites·2 claims
- 4639US5638043AWarning apparatusNIPPON SIGNAL CO LTD·Filed 1994·Granted Jun 10, 1997·8 cites·7 claims
- 4739US5568059ACurrent sensor and motor rotation sensor using such current sensorNIPPON SIGNAL CO LTD·Filed 1993·Granted Oct 22, 1996·6 cites·5 claims
- 4837US5867775AFail-safe signal transmitting apparatus producing a logical product of an input signal and a carrier signalNIPPON SIGNAL CO LTD·Filed 1994·Granted Feb 2, 1999·8 cites·8 claims
- 4936US5905354AMotor stopped verification sensorNIPPON SIGNAL CO LTD·Filed 1996·Granted May 18, 1999·9 cites·28 claims
- 5034US5428279ASafety apparatus determining whether a detected presence is a work piece or a humanSUGIMOTO NOBORU·Filed 1994·Granted Jun 27, 1995·15 cites·7 claims
Showing the top 50 of 56 patent records by PatentIndex Score.
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