Rock Bit International, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21B EARTH OR ROCK DRILLING 789

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6435287 Sharp gage for mill tooth rock bitsFeb 01, 01Aug 20, 02[E21B]
6186250 Sharp gage for mill tooth rockbitsApr 01, 99Feb 13, 01[E21B]
6167975 One cone rotary drill bit featuring enhanced groovesApr 01, 99Jan 02, 01[E21B]
5454437 Roller cone core bitJun 24, 93Oct 03, 95[E21B]
5244050 Rock bit with offset tool portApr 06, 92Sep 14, 93[E21B]
5197555 Rock bit with vectored insertsMay 22, 91Mar 30, 93[E21B]
5145016 Rock bit with reaming rowsJan 30, 91Sep 08, 92[E21B]

Expired/Abandoned/Withdrawn Patents

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Top Inventors for This Owner

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