WS

William D. Stringfellow

SC Smart Pipe Company: 3 patents #4 of 13Top 35%
WU Weatherford Holding U.S.: 2 patents #8 of 45Top 20%
Overall (All Time): #1,000,366 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9453606 Movable factory for simultaneous mobile field manufacturing and installation of non-metallic pipe Stephen C. Catha, Ivan C. Mandich, Aron Ekelund, Kenneth R. Charboneau, Justin Michael Reed 2016-09-27
8567448 Methods and systems for in situ pipe lining Stephen C. Catha, Kenneth R. Charboneau 2013-10-29
7374127 Systems and methods for making pipe liners James L. Gallagher, Kenneth R. Charboneau, Stephen C. Catha 2008-05-20
4711301 Valve assembly for inflatable packer 1987-12-08
4589495 Apparatus and method for inserting flow control means into a well casing Friedrich H. Langer 1986-05-20