Yamada T.S. Co., Ltd.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F01B MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES 225
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 161
 
  
 
F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR 144
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING172

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6619932 Restarting device of a pump change-over valve which induces a pressure difference within the pump change-over valve to remove the latter from an intermediate stalled positionJan 22, 02Sep 16, 03[F04B]
6126403 Diaphragm pumpDec 22, 97Oct 03, 00[P04B]
5758565 Diaphragm assembly and method of manufacturing sameJul 30, 97Jun 02, 98[F01B]
5743169 Diaphragm assembly and method of manufacturing sameAug 29, 95Apr 28, 98[F01B]
5421367 Spool type valveMar 16, 94Jun 06, 95[F16K, F15B]

Expired/Abandoned/Withdrawn Patents

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Top Inventors for This Owner

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