Inventor
FUTSUHARA KOICHI
JP56 patents
⚠️ This page may combine multiple inventors who share the name “FUTSUHARA KOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON SIGNAL CO LTD
41 patentsUS6148055ANov 14, 2000
Counter and a revolution stop detection apparatus using the counter
NIPPON SIGNAL CO LTD16 citations93
US5442303AAug 15, 1995
Electromagnetically coupled fail-safe logic circuit
NIPPON SIGNAL CO LTD34 citations93
US5345138ASep 6, 1994
Method and apparatus for assuring safe work
NIPPON SIGNAL CO LTD84 citations93
US4757417AJul 12, 1988
Monitoring system for load-driving switch circuits
NIPPON SIGNAL CO LTD38 citations93
US4661880AApr 28, 1987
Failsafe monitoring system with input controlled switch circuits
NIPPON SIGNAL CO LTD44 citations93
US6434025B2Aug 13, 2002
Power supply unit
NIPPON SIGNAL CO LTD37 citations92
US6047634AApr 11, 2000
Fail-safe automatic sliding operation control apparatus for press
NIPPON SIGNAL CO LTD28 citations92
US5798703AAug 25, 1998
Mat sensor
NIPPON SIGNAL CO LTD32 citations92
US6504485B2Jan 7, 2003
Monitoring apparatus and control apparatus for traffic signal lights
NIPPON SIGNAL CO LTD17 citations81
US6292524B1Sep 18, 2001
Counting apparatus and rotation stopped detection apparatus which uses a counting apparatus
NIPPON SIGNAL CO LTD7 citations74
US6272001B1Aug 7, 2001
Emergency stop switch and emergency stop switch circuit
NIPPON SIGNAL CO LTD8 citations74
US6034449AMar 7, 2000
Load drive circuit
NIPPON SIGNAL CO LTD14 citations74
US6002249ADec 14, 1999
Rotation detection sensor
NIPPON SIGNAL CO LTD13 citations74
US5903517AMay 11, 1999
Moving body control apparatus
NIPPON SIGNAL CO LTD8 citations74
US5861813AJan 19, 1999
Safety securing device
NIPPON SIGNAL CO LTD11 citations74
US5818681AOct 6, 1998
Electromagnetic relay drive circuit
NIPPON SIGNAL CO LTD7 citations74
US5768077AJun 16, 1998
Earthing wire disconnection detection apparatus and leakage detection apparatus having an earthing wire disconnection detection function conductor
NIPPON SIGNAL CO LTD15 citations74
US5703452ADec 30, 1997
Safety ensuring apparatus
NIPPON SIGNAL CO LTD8 citations74
US5668706ASep 16, 1997
Load driving circuit
NIPPON SIGNAL CO LTD11 citations74
US5638043AJun 10, 1997
Warning apparatus
NIPPON SIGNAL CO LTD8 citations74
US5574320ANov 12, 1996
Load drive circuit
NIPPON SIGNAL CO LTD16 citations74
US5568131AOct 22, 1996
Motor rotation judgement circuit and apparatus using such circuit for verifying that a motor is stopped
NIPPON SIGNAL CO LTD14 citations74
US5519598AMay 21, 1996
Load driving circuit
NIPPON SIGNAL CO LTD10 citations74
US5495228AFeb 27, 1996
Fail-safe scan circuit and a multibeam sensor
NIPPON SIGNAL CO LTD17 citations74
US5432337AJul 11, 1995
Fail-safe scanning circuit and multi-axis light beam-type sensor
NIPPON SIGNAL CO LTD9 citations74
US5105124AApr 14, 1992
Lamp failure detecting device
NIPPON SIGNAL CO LTD7 citations74
US4667184AMay 19, 1987
Apparatus for counting enumeration input pulses
NIPPON SIGNAL CO LTD12 citations74
US5734269AMar 31, 1998
Bridge circuit fault monitoring apparatus using an output signal level from a bridge circuit and a power source current level to determine faults
NIPPON SIGNAL CO LTD9 citations73
US5717302AFeb 10, 1998
Motor stopped verification apparatus
NIPPON SIGNAL CO LTD12 citations73
US5867775AFeb 2, 1999
Fail-safe signal transmitting apparatus producing a logical product of an input signal and a carrier signal
NIPPON SIGNAL CO LTD8 citations72
US5793197AAug 11, 1998
Apparatus for confirming stop of movable portion
NIPPON SIGNAL CO LTD10 citations72
US6459656B1Oct 1, 2002
Information generating apparatus using elastic waves
NIPPON SIGNAL CO LTD5 citations71
US6292432B1Sep 18, 2001
Information generating apparatus using elastic waves
NIPPON SIGNAL CO LTD11 citations71
US6031790AFeb 29, 2000
Information generator using elastic wave
NIPPON SIGNAL CO LTD12 citations71
US5508697AApr 16, 1996
Airplane detection system
NIPPON SIGNAL CO LTD17 citations70
US5285721AFeb 15, 1994
Slide operation control device for a press
NIPPON SIGNAL CO LTD9 citations69
US5905354AMay 18, 1999
Motor stopped verification sensor
NIPPON SIGNAL CO LTD9 citations68
US5578987ANov 26, 1996
Monitoring apparatus for an alarm device
NIPPON SIGNAL CO LTD7 citations68
US6657762B2Dec 2, 2003
Optical barrier device
NIPPON SIGNAL CO LTD4 citations63
US6239956B1May 29, 2001
Fail-safe timing circuit and on-delay circuit using the same
NIPPON SIGNAL CO LTD5 citations63
US5773972AJun 30, 1998
Transition detection circuit for detecting transitions in the state of an object of detection
NIPPON SIGNAL CO LTD3 citations63
NIHON SHINGO KABUSHIKI KAISHA
4 patentsUS6046834AApr 4, 2000
Optical barrier
NIHON SHINGO KABUSHIKI KAISHA14 citations82
US6246503B1Jun 12, 2001
Optical barrier apparatus
NIHON SHINGO KABUSHIKI KAISHA5 citations73
US6185028B1Feb 6, 2001
Optical barrier apparatus
NIHON SHINGO KABUSHIKI KAISHA4 citations73
US6178027B1Jan 23, 2001
Optical barrier apparatus
NIHON SHINGO KABUSHIKI KAISHA4 citations73
KAO CORP
2 patentsKAWASHIMA KIROSHI
1 patentNAGANO KEIKI SEISAKUSHO KK
1 patentSUGIMOTO NOBORU
1 patentShowing the top 50 of 56 patents by PatentIndex Score.