YANG, DUCK JOO

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

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9303504 In-situ artificial pressurization of a well with carbon dioxide recycling to increase oil productionFeb 21, 13Apr 05, 16[C09K, E21B]
8881837 Increasing oil productionDec 04, 12Nov 11, 14[E21B]
8347973 Increasing oil productionNov 21, 08Jan 08, 13[E21B]

Expired/Abandoned/Withdrawn Patents

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Top Inventors for This Owner

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