Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Lawrence A. Behrmann — 38 Patents

Schlumberger Technology: 38 patents #68 of 7,293Top 1%
Houston, TX: #358 of 21,073 inventorsTop 2%
Texas: #2,702 of 125,132 inventorsTop 3%
Overall (All Time): #86,508 of 4,157,543Top 3%
38 Patents All Time

Issued Patents All Time

Showing 26–38 of 38 patents

Patent #TitleCo-InventorsDate
7121340 Method and apparatus for reducing pressure in a perforating gun Brenden M. Grove, Ian C. Walton, Philip Kneisl, Andrew T. Werner 2006-10-17
6966377 Providing a low pressure condition in a wellbore region Ashley Bernard Johnson, Wenbo Yang, Fokko Harm Cornelis Doornbosch, Ian C. Walton 2005-11-22
6896059 Components and methods for use with explosives James E. Brooks, Wenbo Yang, Brenden M. Grove, Ian C. Walton 2005-05-24
6874579 Creating an underbalance condition in a wellbore Ashley Bernard Johnson, Wenbo Yang, Fokko Harm Cornelis Doornbosch 2005-04-05
6732798 Controlling transient underbalance in a wellbore Ashley Bernard Johnson, Wenbo Yang, Fokko Harm Cornelis Doornbosch 2004-05-11
6622630 Booster Wenbo Yang, Jason Hoang Mai 2003-09-23
6598682 Reservoir communication with a wellbore Ashley Bernard Johnson, James E. Brooks, Adinathan Venkitaraman, Ian C. Walton, Anthony P. Vovers +3 more 2003-07-29
6554081 Components and methods for use with explosives James E. Brooks, Wenbo Yang, Brenden M. Grove, Ian C. Walton, Manish Kothari +3 more 2003-04-29
6520258 Encapsulant providing structural support for explosives Wenbo Yang, Brenden M. Grove, Alfredo Fayard, Daniel C. Markel 2003-02-18
6428724 Granulation process William J. Lukasavage, Karri Brock, Wallace E. Voreck 2002-08-06
6397947 Optimizing charge phasing of a perforating gun Jorge E. Lopez de Cardenas, Robert A. Parrott 2002-06-04
6214988 Process for making an HMX product William J. Lukasavage, Wallace E. Voreck 2001-04-10
5392857 Apparatus and method for determining an optimum phase angle for phased charges in a perforating gun to maximize distances between perforations in a formation 1995-02-28