CNPC USA CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21B EARTH OR ROCK DRILLING 1482
 
  
 
C09K MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR689
 
  
 
C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 1115
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0145,281 THINNER FOR OIL-BASED DRILLING FLUIDSMar 04, 16May 25, 17[C09K, E21B]
2017/0145,286 THINNER FOR OIL-BASED DRILLING FLUIDSNov 19, 15May 25, 17[C09K, E21B]
2017/0107,418 HIGH DENSITY AND HIGH TEMPERATURE EMULSIFIER FOR USE IN AN OIL BASED DRILLING FLUID SYSTEMOct 14, 15Apr 20, 17[C09K, E21B]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9909050 High density and high temperature emulsifier for use in an oil based drilling fluid systemOct 14, 15Mar 06, 18[C09K, E21B]
9840876 Polycrystalline diamond compact cutterOct 05, 15Dec 12, 17[E21B, C22C]
9746403 Method of testing a polycrystalline diamond compact cutterOct 02, 15Aug 29, 17[G01N, E21B]
9394777 Pressure controlled multi-shift frac sleeve systemDec 06, 13Jul 19, 16[E21B]
9376877 System and method for setting a completion toolApr 25, 14Jun 28, 16[E21B]
9121224 Vibrational tool with tool axis rotational mass and methodDec 03, 12Sep 01, 15[E21B]
9121225 Drill bit housing vibrator and methodDec 03, 12Sep 01, 15[E21B]
9121253 Millable bridge plug systemDec 19, 12Sep 01, 15[E21B]
9121254 Millable bridge plug systemDec 19, 12Sep 01, 15[E21B]
9033067 Vibrational tool with rotating engagement surfaces and methodDec 03, 12May 19, 15[E21B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0212,226 SYSTEM AND METHOD FOR A DOWNHOLE LOGGING TOOL WITH AN ARRAY OF PAIRED RECEIVER ANTENNASAbandonedJan 26, 15Jul 30, 15[G01V]
2015/0136,403 BALL SEAT SYSTEMAbandonedNov 20, 13May 21, 15[E21B]
2014/0174,738 MILLABLE BRIDGE PLUG SYSTEMAbandonedDec 20, 12Jun 26, 14[E21B]

Top Inventors for This Owner

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