JW

Jeffrey E. Walker

TI Tuboscope I/P: 8 patents #6 of 31Top 20%
VI Varco I/P: 6 patents #24 of 168Top 15%
CT Ctb: 5 patents #18 of 85Top 25%
Overall (All Time): #200,908 of 4,157,543Top 5%
21
Patents All Time

Issued Patents All Time

Showing 1–21 of 21 patents

Patent #TitleCo-InventorsDate
12252349 Grain bin unload trough conveyor auger hanger assembly and method Adam K. Gutwein, Mark S. Dingeldein 2025-03-18
11952218 Grain bin unload trough conveyor auger hanger assembly and method Adam K. Gutwein, Mark S. Dingeldein 2024-04-09
11136205 Grain bin powersweep with sweep conveyor end wheel Adam K. Gutwein, Mark S. Dingeldein 2021-10-05
11066256 Grain bin powersweep with sump shaft aperture sealing cover plate assembly Adam K. Gutwein, Mark S. Dingeldein 2021-07-20
11066247 Powersweep including gearbox shifter mechanism Adam K. Gutwein, Mark S. Dingeldein 2021-07-20
9764358 Screen assembly for vibratory screening machines 2017-09-19
7520391 Screen assembly for vibratory separator David Schulte, Thomas C. Adams, Kerry Ward, Kenneth W. Seyffert, Charles N. Grichar +3 more 2009-04-21
6722504 Vibratory separators and screens David Schulte, Thomas C. Adams, Kenneth W. Seyffert, David W. Largent, Guy L. McClung, III +1 more 2004-04-20
6565698 Method for making vibratory separator screens Thomas C. Adams, Kenneth W. Seyffert, David W. Largent, David Schulte, Charles N. Grichar +2 more 2003-05-20
6530483 Unibody structure for screen assembly David Schulte, Thomas C. Adams, Kenneth W. Seyffert, David W. Largent, Guy L. McClung, III +1 more 2003-03-11
6450345 Glue pattern screens and methods of production Thomas C. Adams, Kenneth W. Seyffert, David W. Largent, David Schulte, Charles N. Grichar +2 more 2002-09-17
6443310 Seal screen structure David Schulte, Thomas Adams, Kenneth W. Seyffert, David W. Largent, Guy L. McClung, III +1 more 2002-09-03
6371302 Vibratory separator screens Thomas C. Adams, Kenneth W. Seyffert, David W. Largent, David Schulte, Hector M. Murray +3 more 2002-04-16
6325216 Screen apparatus for vibratory separator Kenneth W. Seyffert, Thomas C. Adams, David W. Largent, David Schulte, Charles N. Grichar +2 more 2001-12-04
6290068 Shaker screens and methods of use Thomas C. Adams, Kenneth W. Seyffert, David W. Largent, David Schulte, Guy L. McClung, III +3 more 2001-09-18
6283302 Unibody screen structure David Schulte, Thomas C. Adams, Kenneth W. Seyffert, David W. Largent, Guy L. McClung, III +1 more 2001-09-04
6269953 Vibratory separator screen assemblies Kenneth W. Seyffert, Thomas Adams, David W. Largent, Charles N. Grichar, David Schulte +4 more 2001-08-07
6152307 Vibratory separator screens Thomas C. Adams, Kenneth W. Seyffert, David W. Largent, David Schulte, Hector M. Murray +1 more 2000-11-28
6032806 Screen apparatus for vibratory separator Vincent D. Leone, Thomas C. Adams, David Schulte, Charles N. Grichar, Kenneth W. Seyffert +1 more 2000-03-07
5971159 Screen assembly for a vibratory separator Vincent D. Leone, Thomas C. Adams, David Schulte, Charles N. Grichar, Kenneth W. Seyffert +1 more 1999-10-26
5598930 Shale shaker screen Vincent D. Leone, Charles N. Grichar, Kenneth W. Seyffert, Guy L. McClung, III 1997-02-04