Tomoe Technical Research Company Ltd.

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING370
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 158

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7090193 Butterfly valveJul 31, 03Aug 15, 06[F16K]
6338468 Butterfly valve with low noiseDec 18, 00Jan 15, 02[F16K]
4926903 Butterfly valve having a function for measuring a flow rate and method of measuring a flow rate with a butterfly valveMay 05, 89May 22, 90[F16K, G01F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6991210 Actuator for driving a valveExpiredMay 23, 03Jan 31, 06[F16K]
5490660 Manual device for valveExpiredJan 17, 95Feb 13, 96[F16K]
5482252 Seat ring and butterfly valve fitting this seat ring theretoExpiredFeb 08, 95Jan 09, 96[F16K]
5150731 Butterfly valve to prevent dew condensation therefromExpiredDec 27, 90Sep 29, 92[F16L]
RE33649 Butterfly valve having a function for measuring a flow rate and method of measuring a flow rate with a butterfly valveExpiredOct 09, 90Jul 30, 91[F16K, G01F]
5029811 Butterfly valveExpiredMar 23, 90Jul 09, 91[F16K]
4318422 Butterfly valveExpiredDec 05, 79Mar 09, 82[F16K]
4289297 Butterfly valveExpiredApr 08, 80Sep 15, 81[F16K]
4235258 Driving device for opening and closing a valveExpiredJan 03, 78Nov 25, 80[F16K]

Top Inventors for This Owner

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