YUKEN KOGYO CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
1502 PUMPS AND COMPRESSORS215
 
  
 
E21B EARTH OR ROCK DRILLING 195
 
  
 
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

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9541082 Oil-well-pump driving hydraulic systemMar 14, 13Jan 10, 17[F04B, F15B, E21B]
D613769 Hydraulic pumpNov 25, 09Apr 13, 10[1502]
D613770 Hydraulic pumpNov 25, 09Apr 13, 10[1502]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4246621 Energizing circuit for solenoid valveExpiredJul 12, 78Jan 20, 81[H02H]

Top Inventors for This Owner

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