CG

Charles N. Grichar

VI Varco I/P: 14 patents #6 of 168Top 4%
TI Tuboscope I/P: 7 patents #7 of 31Top 25%
GE Geosource: 2 patents #7 of 55Top 15%
📍 Houston, TX: #750 of 21,073 inventorsTop 4%
🗺 Texas: #5,391 of 125,132 inventorsTop 5%
Overall (All Time): #175,457 of 4,157,543Top 5%
24
Patents All Time

Issued Patents All Time

Showing 1–24 of 24 patents

Patent #TitleCo-InventorsDate
7581647 Shale shaker Kenneth W. Seyffert, Guy L. McClung, III 2009-09-01
7520391 Screen assembly for vibratory separator David Schulte, Thomas C. Adams, Kerry Ward, Kenneth W. Seyffert, Vincent D. Leone +3 more 2009-04-21
7216767 Screen basket and shale shakers David Schulte, Guy L. McClung, III 2007-05-15
7198156 Dam basket for vibratory separators David Schulte, Richard James Koch, Guy L. McClung, III 2007-04-03
7000776 Screen assembly for vibratory separators Joseph C. Winkler, Thomas C. Adams, Kenneth W. Seyffert, David W. Largent, David Schulte +1 more 2006-02-21
6769550 Screen assemblies for shale shakers Thomas C. Adams, Haynes Smith, James Adams, Kerry Ward, George Alexander Burnett +2 more 2004-08-03
6736270 Glued screens for shale shakers Thomas C. Adams, Kerry Ward, Kenneth W. Seyffert, David W. Largent, David Schulte +3 more 2004-05-18
6715611 Vibratory separator Mark Crabbe, David Schulte 2004-04-06
6669985 Methods for making glued shale shaker screens Thomas C. Adams, Kerry Ward, Kenneth W. Seyffert, David W. Largent, David Schulte +3 more 2003-12-30
6607080 Screen assembly for vibratory separators Joseph C. Winkler, Thomas C. Adams, David Schulte, Kenneth W. Seyffert, David W. Largent +1 more 2003-08-19
6565698 Method for making vibratory separator screens Thomas C. Adams, Kenneth W. Seyffert, David W. Largent, David Schulte, Vincent D. Leone +2 more 2003-05-20
6454099 Vibrator separator screens Thomas C. Adams, David Schulte, Kenneth W. Seyffert, David W. Largent, Guy L. McClung, III 2002-09-24
6450345 Glue pattern screens and methods of production Thomas C. Adams, Kenneth W. Seyffert, David W. Largent, David Schulte, Vincent D. Leone +2 more 2002-09-17
6412644 Vibratory separator Mark Crabbe, David Schulte 2002-07-02
6371302 Vibratory separator screens Thomas C. Adams, Kenneth W. Seyffert, David W. Largent, David Schulte, Jeffrey E. Walker +3 more 2002-04-16
6371301 Screen basket for shale shakers David Schulte 2002-04-16
6325216 Screen apparatus for vibratory separator Kenneth W. Seyffert, Thomas C. Adams, David W. Largent, David Schulte, Vincent D. Leone +2 more 2001-12-04
6269953 Vibratory separator screen assemblies Kenneth W. Seyffert, Thomas Adams, David W. Largent, David Schulte, Guy L. McClung, III +4 more 2001-08-07
6220449 Flat top cloth support screen David Schulte, Kenneth W. Seyffert, Thomas C. Adams 2001-04-24
6032806 Screen apparatus for vibratory separator Vincent D. Leone, Thomas C. Adams, Jeffrey E. Walker, David Schulte, Kenneth W. Seyffert +1 more 2000-03-07
5971159 Screen assembly for a vibratory separator Vincent D. Leone, Thomas C. Adams, Jeffrey E. Walker, David Schulte, Kenneth W. Seyffert +1 more 1999-10-26
5598930 Shale shaker screen Vincent D. Leone, Jeffrey E. Walker, Kenneth W. Seyffert, Guy L. McClung, III 1997-02-04
4743226 High capacity continuous solid bowl centrifuge Roger W. Day 1988-05-10
4505591 Solids mixing well structure and method Roger W. Day 1985-03-19