PERF-O-LOG, INC.
Patent Owner
Stats
- 4 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Mar 14, 2006 most recent publication
Details
- 4 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 136 Total Citation Count
- Mar 18, 1999 Earliest Filing
- 5 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
Rank in Class
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
7011160 High torque and high capacity rotatable center core with ram body assembliesJul 03, 03Mar 14, 06[E21B]
6651746 High torque and high capacity rotatable center core and floatable sealed body assemblies with universals ram applications and methodJul 03, 02Nov 25, 03[E21B]
6637516 High torque and high capacity rotatable center core and floatable sealed body assemblies with universal RAM applications and methodNov 26, 01Oct 28, 03[E21B]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
6913084 Method and apparatus for controlling well pressure while undergoing subsea wireline operationsExpiredFeb 18, 03Jul 05, 05[E21B]
6367553 Method and apparatus for controlling well pressure while undergoing wireline operations on subsea blowout preventersExpiredMay 16, 00Apr 09, 02[E21B]
6276466 System for measuring the direction and revolution of a production stringExpiredOct 29, 99Aug 21, 01[E21B]
Top Inventors for This Owner
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