DL

David W. Largent

VI Varco I/P: 15 patents #5 of 168Top 3%
TI Tuboscope I/P: 11 patents #5 of 31Top 20%
NV National Oilwell Varco: 1 patents #240 of 551Top 45%
Overall (All Time): #147,254 of 4,157,543Top 4%
27
Patents All Time

Issued Patents All Time

Showing 25 most recent of 27 patents

Patent #TitleCo-InventorsDate
8708065 Vessel to condition dry drill cuttings 2014-04-29
7520391 Screen assembly for vibratory separator David Schulte, Thomas C. Adams, Kerry Ward, Kenneth W. Seyffert, Charles N. Grichar +3 more 2009-04-21
7000776 Screen assembly for vibratory separators Joseph C. Winkler, Thomas C. Adams, Kenneth W. Seyffert, David Schulte, Charles N. Grichar +1 more 2006-02-21
6848583 Drilling fluid treatment Guy L. McClung, III 2005-02-01
6736270 Glued screens for shale shakers Thomas C. Adams, Kerry Ward, Kenneth W. Seyffert, David Schulte, Charles N. Grichar +3 more 2004-05-18
6722504 Vibratory separators and screens David Schulte, Thomas C. Adams, Kenneth W. Seyffert, Guy L. McClung, III, Jeffrey E. Walker +1 more 2004-04-20
6669985 Methods for making glued shale shaker screens Thomas C. Adams, Kerry Ward, Kenneth W. Seyffert, David Schulte, Charles N. Grichar +3 more 2003-12-30
6629610 Screen with ramps for vibratory separator system Thomas C. Adams, David Schulte, Kenneth W. Seyffert, Guy L. McClung, III 2003-10-07
6607080 Screen assembly for vibratory separators Joseph C. Winkler, Thomas C. Adams, David Schulte, Kenneth W. Seyffert, Charles N. Grichar +1 more 2003-08-19
6581781 Vibrator separator screens Thomas C. Adams, David Schulte, Kenneth W. Seyffert, Guy L. McClung, III 2003-06-24
6565698 Method for making vibratory separator screens Thomas C. Adams, Kenneth W. Seyffert, David Schulte, Charles N. Grichar, Vincent D. Leone +2 more 2003-05-20
6530483 Unibody structure for screen assembly David Schulte, Thomas C. Adams, Kenneth W. Seyffert, Guy L. McClung, III, Jeffrey E. Walker +1 more 2003-03-11
6510947 Screens for vibratory separators David Schulte, Thomas C. Adams 2003-01-28
6457588 Treatment of fluid having lost circulation material David Schulte, Thomas C. Adams 2002-10-01
6458283 Lost circulation fluid treatment Thomas C. Adams, David Schulte 2002-10-01
6454099 Vibrator separator screens Thomas C. Adams, David Schulte, Kenneth W. Seyffert, Charles N. Grichar, Guy L. McClung, III 2002-09-24
6450345 Glue pattern screens and methods of production Thomas C. Adams, Kenneth W. Seyffert, David Schulte, Charles N. Grichar, Vincent D. Leone +2 more 2002-09-17
6443310 Seal screen structure David Schulte, Thomas Adams, Kenneth W. Seyffert, Guy L. McClung, III, Jeffrey E. Walker +1 more 2002-09-03
6401934 Ramped screen & vibratory separator system Kenneth W. Seyffert, Thomas C. Adams, David Schulte, Guy L. MoClung, III 2002-06-11
6371302 Vibratory separator screens Thomas C. Adams, Kenneth W. Seyffert, David Schulte, Jeffrey E. Walker, Hector M. Murray +3 more 2002-04-16
6371306 Lost circulation fluid treatment Thomas C. Adams, David Schulte 2002-04-16
6325216 Screen apparatus for vibratory separator Kenneth W. Seyffert, Thomas C. Adams, David Schulte, Charles N. Grichar, Vincent D. Leone +2 more 2001-12-04
6290068 Shaker screens and methods of use Thomas C. Adams, Kenneth W. Seyffert, David Schulte, Guy L. McClung, III, Jeffrey E. Walker +3 more 2001-09-18
6283302 Unibody screen structure David Schulte, Thomas C. Adams, Kenneth W. Seyffert, Guy L. McClung, III, Jeffrey E. Walker +1 more 2001-09-04
6269953 Vibratory separator screen assemblies Kenneth W. Seyffert, Thomas Adams, Charles N. Grichar, David Schulte, Guy L. McClung, III +4 more 2001-08-07