Atlas Copco Rocktech AB

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21B EARTH OR ROCK DRILLING 393
 
  
 
B25D PERCUSSIVE TOOLS 119

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5479996 Rock drilling device with recoil damperOct 06, 94Jan 02, 96[B25D, E21B]
5372196 Hammer drill deviceJun 14, 93Dec 13, 94[E21B]
5320189 Rock drilling deviceMar 31, 93Jun 14, 94[E21B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5488998 Fluid driven down-the-hole drilling machineExpiredJul 01, 94Feb 06, 96[B25D]
5458205 Liquid driven hammer machineExpiredOct 29, 93Oct 17, 95[E21C]
5375670 Drill string component for drilling with a liquid driven drilling machineExpiredMay 07, 93Dec 27, 94[F21B]

Top Inventors for This Owner

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