THE NIPPON SIGNAL CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B61L GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC 1414
 
  
 
B60L ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL 472
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 3156
 
  
 
G01S RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES3106
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 3202
 
  
 
H04B TRANSMISSION 3207
 
  
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 282
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 292
 
  
 
H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF 2100
 
  
 
H04W WIRELESS COMMUNICATION NETWORKS 2186

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9821826 Train information announcement systemMar 27, 14Nov 21, 17[B61L]
9789891 Train control apparatusSep 26, 14Oct 17, 17[B61L]
9669853 Train control systemMar 27, 14Jun 06, 17[B61L, B60L]
9663125 Train control systemMar 27, 14May 30, 17[B61L, G06F, G05D]
9628998 Wireless communication network systemFeb 13, 14Apr 18, 17[B61L, H04B, H04W]
9581689 Reader/writer and article sorting systemJun 25, 08Feb 28, 17[H04Q, G01S, G06K]
9540019 Train control deviceSep 30, 14Jan 10, 17[B61L, B61H, B60T, B60L]
9505420 Train control systemMar 27, 14Nov 29, 16[B61L]
9319163 Wireless communication network system synchronization methodMar 27, 14Apr 19, 16[B61L, H04B, H04W, H04J]
9278702 Train control systemMar 27, 14Mar 08, 16[B61L]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7197932 Failure detecting systemExpiredSep 04, 00Apr 03, 07[G01N]
6774445 ActuatorExpiredMay 30, 02Aug 10, 04[H01L]
6657762 Optical barrier deviceExpiredAug 28, 01Dec 02, 03[G02B]
6504485 Monitoring apparatus and control apparatus for traffic signal lightsExpiredJan 09, 01Jan 07, 03[G08B]
6457650 Card with display functionExpiredJun 21, 00Oct 01, 02[G06K]
6459656 Information generating apparatus using elastic wavesExpiredJul 31, 01Oct 01, 02[B61L, G01V]
6456413 Planar type optical scanning apparatus and mounting structure thereofExpiredOct 13, 00Sep 24, 02[G02B]
6434025 Power supply unitExpiredOct 08, 99Aug 13, 02[H02M]
6392451 Threshold value operation circuit, and, and gate circuit, self hold circuit, start signal generation circuit using threshold value operation circuitExpiredMay 01, 00May 21, 02[H03K]
6334077 Operation apparatus for pressExpiredSep 18, 98Dec 25, 01[G06F]
6292432 Information generating apparatus using elastic wavesExpiredDec 17, 99Sep 18, 01[B61L, G01V]
6292524 Counting apparatus and rotation stopped detection apparatus which uses a counting apparatusExpiredJun 20, 00Sep 18, 01[G06M]
6272001 Emergency stop switch and emergency stop switch circuitExpiredAug 09, 99Aug 07, 01[H01H]
6241418 Device for blocking exit of car from parking lotExpiredJun 15, 99Jun 05, 01[E01F]
6239956 Fail-safe timing circuit and on-delay circuit using the sameExpiredAug 13, 97May 29, 01[H02H]
6184799 Monitoring apparatus and control apparatus for traffic signal lightsExpiredDec 17, 96Feb 06, 01[G08G]
6047634 Fail-safe automatic sliding operation control apparatus for pressExpiredJul 17, 98Apr 11, 00[B30B]
6031790 Information generator using elastic waveExpiredOct 01, 98Feb 29, 00[B61L, G01V]
6002249 Rotation detection sensorExpiredAug 08, 97Dec 14, 99[G01P]
5905354 Motor stopped verification sensorExpiredMay 09, 97May 18, 99[G08B]

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Top Inventors for This Owner

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