ACT Operating Company

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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
 
 
 
E21D SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS 115

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8469099 Hydraulic fracturing of subterranean formationsJul 20, 10Jun 25, 13[E21B]
8074744 Horizontal waterjet drilling methodMar 29, 10Dec 13, 11[E21B]
7770647 Hydraulic fracturing of subterranean formationsOct 29, 08Aug 10, 10[E21B]
7690444 Horizontal waterjet drilling methodNov 24, 08Apr 06, 10[E21D, E03B]

Expired/Abandoned/Withdrawn Patents

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Top Inventors for This Owner

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