Tokyo Keiso Kabushiki-Kaisha

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 653
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS198
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158
 
  
 
H01R ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS 1132

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7305309 Transmission measuring system with high time resolutionDec 27, 05Dec 04, 07[G01F]
6647805 Transit-time difference type ultrasonic flowmeterNov 02, 01Nov 18, 03[G01F]
6055868 Ultrasonic flow meterOct 14, 97May 02, 00[G01F]
5974897 Ultrasonic flow meterOct 14, 97Nov 02, 99[G01F]
5717145 Detector for an ultrasonic flow meterMar 14, 96Feb 10, 98[G01F]
5544533 Area flow meter with hall devices having magnetism-responsive surfacesDec 15, 94Aug 13, 96[G01R]
5478966 Hinged long-reach magnetic detector for liquid level measurementsNov 09, 94Dec 26, 95[H01R, G01B, G01F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6622572 Ultrasonic flowmeter for controlling the gain of an amplifier for amplifying received signalsExpiredMar 14, 02Sep 23, 03[G01F]
6563306 Method and apparatus for detecting displacement of a magnet moved in response to variation of a physical characteristic of a fluidExpiredJun 25, 01May 13, 03[H01L, G01B, G01F]
4936151 Paddle-wheel type flow meterExpiredJun 05, 89Jun 26, 90[G01F]
4236144 Inspection system for a group of tanksExpiredDec 12, 78Nov 25, 80[G08B, G08C]

Top Inventors for This Owner

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