ZENITH OILFIELD TECHNOLOGY LIMITED

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
E21B EARTH OR ROCK DRILLING 1086
 
 
 
G01V GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS 476
 
 
 
G01L MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE 254
 
 
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 2204
 
 
 
H04B TRANSMISSION 2208
 
 
 
G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR 159
 
 
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 158

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0084,073 HIGH TEMPERATURE DOWNHOLE GAUGE SYSTEMDec 07, 15Mar 24, 16[G01L, E21B]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9840907 Data communications systemFeb 28, 13Dec 12, 17[H04B, E21B, G01V]
9541436 Distributed two dimensional fluid sensorNov 21, 12Jan 10, 17[G01N, G01D, E21B, G01F]
9541665 Fluid determination in a well boreSep 25, 12Jan 10, 17[E21B, G01V]
9234419 High temperature downhole gauge systemNov 16, 11Jan 12, 16[G01L, G01D, E21B]
8344904 Signal processing in downhole equipmentFeb 19, 08Jan 01, 13[G01V]
7044232 Well apparatus connection assemblyFeb 11, 05May 16, 06[E21B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0144,226 Distributed Fluid Velocity Sensor and Associated MethodAbandonedOct 26, 11May 29, 14[E21B]
2013/0261,977 Method of Determining a Phase Change in a ReservoirAbandonedOct 19, 11Oct 03, 13[G01V]
2006/0000,605 Apparatus and methodAbandonedMar 01, 05Jan 05, 06[E21B]

Top Inventors for This Owner

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