Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
JW

John Wallis

Schlumberger Technology: 4 patents #1,558 of 7,293Top 25%
Chevron: 2 patents #1,772 of 4,788Top 40%
SLSeven Towns Limited: 1 patents #3 of 6Top 50%
Sugar Land, TX: #490 of 1,869 inventorsTop 30%
Texas: #24,375 of 125,132 inventorsTop 20%
Overall (All Time): #857,271 of 4,157,543Top 25%
6 Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
8903694 System and method for performing reservoir simulation using preconditioning Gary K. Li, Gareth Shaw 2014-12-02
8775144 Constrained pressure residual preconditioner for efficient solution of the adjoint equation Choongyong Han, Pallav Sarma, Gary K. Li, Mark Schrader, Wen-hsiung Chen 2014-07-08
7684967 Apparatus, method and system for improved reservoir simulation using an algebraic cascading class linear solver Hamdi A. Tchelepi 2010-03-23
7516056 Apparatus, method and system for improved reservoir simulation using a multiplicative overlapping Schwarz preconditioning for adaptive implicit linear systems Hamdi A. Tchelepi, Hui Cao 2009-04-07
6582271 Constructional toy and apparatus for making the same 2003-06-24
6230101 Simulation method and apparatus 2001-05-08