Maruzen Kogyo Company Ltd.

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
B25D PERCUSSIVE TOOLS 218
 
 
 
E21B EARTH OR ROCK DRILLING 195
 
 
 
F16D COUPLINGS FOR TRANSMITTING ROTATION 190

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5984027 Engine-driven breakerNov 08, 96Nov 16, 99[B25D, E21B]
5279120 Hydraulic striking deviceJul 28, 92Jan 18, 94[B25D, F16D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4444274 Liquid pressure striking deviceExpiredAug 19, 81Apr 24, 84[F01L, F01B]

Top Inventors for This Owner

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