Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
MO

Michael O'Keefe — 22 Patents

Schlumberger Technology: 13 patents #424 of 7,293Top 6%
UNUnknown: 3 patents #7,366 of 83,584Top 9%
CHCooley Group Holdings: 1 patents #10 of 15Top 70%
Overall (All Time): #189,202 of 4,157,543Top 5%
22 Patents All Time
Michael O'Keefe has been granted 22 US patents while listed as an inventor at Schlumberger Technology. The first was granted in 1994 and the most recent in April 2016. Michael O'Keefe ranks #189,202 of 4,157,543 US inventors in our database (top 4.6%). Patent records list Michael O'Keefe in Kleppestø, MA, NO.

Patents per Year

Patents granted per year, 1994 to 2016Bar chart with a peak of 3 patents in 2011.peak 31994: 1 patents19942001: 2 patents2002: 1 patents20022003: 1 patents2004: 1 patents20042005: 1 patents2006: 1 patents20062007: 1 patents2009: 1 patents20092010: 2 patents2011: 3 patents20112012: 2 patents2013: 1 patents20132014: 3 patents2016: 1 patents2016

Issued Patents All Time

Showing 1–22 of 22 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9303510 Downhole fluid analysis methods Hadrien Dumont, Beatriz E. Barbosa, Oliver C. Mullins, Youxiang Zuo, Vinay K. Mishra 2016-04-05 $52,870,000
8805617 Methods and apparatus for characterization of petroleum fluids contaminated with drilling mud Youxiang Zuo, Dingan Zhang, Dong Chengli, Oliver C. Mullins 2014-08-12 $47,836,000
8714254 Method for mixing fluids downhole Christopher Harrison, Ronald E. G. van Hal, Jimmy Lawrence, Oliver C. Mullins 2014-05-06 $31,706,000
8708049 Downhole mixing device for mixing a first fluid with a second fluid Jimmy Lawrence, Douglas W. Grant, Jane Lam, James Haug, Roman Kats +4 more 2014-04-29 $47,102,000
8555696 Methods of calibrating a fluid analyzer for use in a wellbore Chengli Dong, Ricardo Vasques, Peter S. Hegeman, Oliver C. Mullins, Go Fujisawa +3 more 2013-10-15 $35,594,000
8256283 Method of downhole characterization of formation fluids, measurement controller for downhole characterization of formation fluids, and apparatus for downhole characterization of formation fluids Toru Terabayashi, Tsutomu Yamate, Hideki Kinjo, Akihito Chikenji, Takeaki Nakayama +3 more 2012-09-04 $46,596,000
8202579 Water-resistant fabrics and methods of preparation thereof Justin J. Silvia, David A. Pettey 2012-06-19
8022707 Methods and apparatus for determining a presence of a non-conductive coating on electrodes in downhole fluid resistivity measurement devices Sophie Nazik Godefroy 2011-09-20 $19,364,000
7996154 Methods and apparatus for analysis of downhole asphaltene gradients and applications thereof Youxiang Zuo, Oliver C. Mullins, Jinglin Gao, Abdel M. Kharrat, Kentaro Indo +3 more 2011-08-09 $43,004,000
7874355 Methods and apparatus for removing deposits on components in a downhole tool Sophie Nazik Godefroy, Nasser Dilmaghani Zadeh 2011-01-25 $58,786,000
7788972 Method of downhole characterization of formation fluids, measurement controller for downhole characterization of formation fluids, and apparatus for downhole characterization of formation fluids Toru Terabayashi, Tsutomu Yamate, Hideki Kinjo, Akihito Chikenji, Takeaki Nakayama +3 more 2010-09-07 $67,109,000
7644611 Downhole fluid analysis for production logging Akira Kamiya, Gary Oddie, Stephane Vannuffelen, Tsutomu Yamate, Oliver C. Mullins +8 more 2010-01-12 $89,880,000
7614294 Systems and methods for downhole fluid compatibility Peter S. Hegeman, Anthony Robert Holmes Goodwin, Moin Muhammad, Ricardo Vasques, Cosan Ayan +1 more 2009-11-10 $120,127,000
7305306 System and methods of deriving fluid properties of downhole fluids and uncertainty thereof Lalitha Venkataramanan, Go Fujisawa, Bhavani Raghuraman, Oliver C. Mullins, Andrew Carnegie +4 more 2007-12-04 $91,262,000
6981888 Lockable electric power cord adapter Michael Mueller, John Witzigreuter 2006-01-03
6875040 Lockable electric power cord adapter Michael Mueller, John Witzigreuter 2005-04-05
6749206 Container for recyclable materials Floyd S. Butterfield 2004-06-15
6505842 Storing and transporting flexible sheets Floyd S. Butterfield 2003-01-14
6428339 Lockable electrical cord connector unit Richard G Davidson, James K. Bentley 2002-08-06
6315593 Multiple gang electrical connector assembly James K. Bentley, Richard G Davidson 2001-11-13
6293568 Storing and transporting flexible sheets Floyd S. Butterfield 2001-09-25
5352132 Extension cord Theodore Sares 1994-10-04