Riken Keiki Co., Ltd.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 8198
 
  
 
G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT 156
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 193

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0258,896 POTENTIOSTATIC ELECTROLYTIC GAS SENSOROct 22, 14Sep 08, 16[G01N]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7526942 Contact combustion gas sensorJun 04, 04May 05, 09[G01N]
7479255 Gas sensorNov 14, 02Jan 20, 09[G01N]
7101716 Formaldehyde detecting materialSep 10, 03Sep 05, 06[G01N]
7086283 Explosion-proof portable gas detectorJul 15, 04Aug 08, 06[G01P]
6436258 Galvanic-cell gas sensorOct 23, 00Aug 20, 02[G01N]
6348872 Gas detector-alarm employing hot-wire gas sensorOct 23, 00Feb 19, 02[G08B]
D447974 Portable gas detector-alarmOct 17, 00Sep 18, 01[1005]
D403603 Wrist watch type gas measuring deviceDec 24, 97Jan 05, 99[1004]
5397536 Silane gas detecting tapeDec 08, 93Mar 14, 95[G01N]
5250260 Tape for detecting hydridesOct 30, 92Oct 05, 93[G01N]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0233,056 METHOD FOR MEASURING SPECIFIC GRAVITY OF COMBUSTIBLE GASES, DEVICE FOR MEASURING SPECIFIC GRAVITY, AND DEVICE FOR MEASURING WOBBE INDEXAbandonedAug 04, 11Sep 12, 13[G01N]
2010/0297,488 EXPLOSION-PROOF STRUCTURE OF POWER SOURCE PART, EXPLOSION-PROOF TYPE BATTERY UNIT AND EXPLOSION-PROOF TYPE GAS ALARMAbandonedJan 26, 09Nov 25, 10[H01M]
7837935 Joint for joining hydrogen gas running route-forming members and portable hydrogen flame ionization gas detectorExpiredMar 29, 06Nov 23, 10[G01N]
2007/0274,860 Gas Detectomg Element and Gas Detecting Device Suited for SameAbandonedNov 12, 04Nov 29, 07[G01N]
2007/0205,363 Photoelectron Measuring DeviceAbandonedMar 11, 05Sep 06, 07[G01N]
2007/0131,550 Electrochemical gas sensorAbandonedOct 27, 04Jun 14, 07[G01N]
7178381 Portable gas detectorExpiredAug 09, 04Feb 20, 07[G01P]
7089779 Portable gas detectorExpiredAug 09, 04Aug 15, 06[G01N]
2006/0090,542 Gas detecting sheetAbandonedOct 17, 05May 04, 06[G01N]
2005/0092,065 Portable gas detectorAbandonedAug 09, 04May 05, 05[G01N]
6744373 Portable gas alarm deviceExpiredMar 25, 02Jun 01, 04[G08B, G01N, G01R]
6712586 Gas suction pump device, gas feed adapter and gas alarm unitExpiredJul 22, 02Mar 30, 04[F04B]
2004/0057,874 Light-interference fluid characteristics analyzer and frame for such analyzerAbandonedSep 25, 02Mar 25, 04[G01N]
6606897 Portable gas detector and its cradleExpiredOct 10, 00Aug 19, 03[G01L, G01N, G01P, G01D]
6456943 Carbon dioxide concentration sensorExpiredMay 14, 99Sep 24, 02[G01N]
2001/0010,289 Constant-potential coulometric ammonia gas sensorAbandonedJan 24, 01Aug 02, 01[G01N]

Top Inventors for This Owner

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