Inventor
David L. Schulte
Inventor
Broussard, LA, US
Overview
Patents· 47 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B07Bprimary
B07BSeparating solids from solids by sieving, screening, sifting or by using gas currents32%
B01DSeparation31%
E21BEarth or rock drilling27%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form4%
B21FWorking or processing of metal wire4%
Y10TTechnical subjects covered by former us classification1%
C07DHeterocyclic compounds1%
LOC151%
PatentTitleYear
8,622,220'Vibratory separators and screens'20147,980,392'Shale shaker screens with aligned wires'20117,520,391'Screen assembly for vibratory separator'20097,216,767'Screen basket and shale shakers'20077,198,156'Dam basket for vibratory separators'20077,063,214'Interlocking screens for vibratory separators'20067,000,776'Screen assembly for vibratory separators'20067,000,777'Vibratory separator screens'20066,932,883'Screens for vibratory separators'20056,892,888'Screen with unibody structure'20056,863,183'Shale shaker'20056,811,032'Shaker roll screen'20046,736,270'Glued screens for shale shakers'20046,722,504'Vibratory separators and screens'20046,715,611'Vibratory separator'20046,669,985'Methods for making glued shale shaker screens'20036,629,610'Screen with ramps for vibratory separator system'20036,607,080'Screen assembly for vibratory separators'20036,601,709'Screen support and screens for shale shakers'20036,581,781'Vibrator separator screens'20036,565,698'Method for making vibratory separator screens'20036,530,483'Unibody structure for screen assembly'20036,510,947'Screens for vibratory separators'20036,458,283'Lost circulation fluid treatment'20026,457,588'Treatment of fluid having lost circulation material'20026,454,099'Vibrator separator screens'20026,450,345'Glue pattern screens and methods of production'20026,443,310'Seal screen structure'20026,412,644'Vibratory separator'20026,401,934'Ramped screen & vibratory separator system'20026,371,301'Screen basket for shale shakers'20026,371,302'Vibratory separator screens'20026,371,306'Lost circulation fluid treatment'20026,325,216'Screen apparatus for vibratory separator'20016,302,276'Screen support strip for use in vibratory screening apparatus'20016,290,068'Shaker screens and methods of use'20016,283,302'Unibody screen structure'20016,269,953'Vibratory separator screen assemblies'20016,267,247'Vibratory separator screen'20016,241,098'Drilling fluid treatment operations and apparatuses'20016,237,780'Vibratory separator screens'20016,220,449'Flat top cloth support screen'20016,152,307'Vibratory separator screens'2000D0425531'Screen'20006,032,806'Screen apparatus for vibratory separator'20005,988,397'Screen for vibratory separator'19995,971,159'Screen assembly for a vibratory separator'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999–2004Patents assigned to TUBOSCOPE I P INC (19)· patent assignee history
1999–2006Based in Broussard, LA, US· patent location history
2001Based in Broussar, LA, US· patent location history
2002–2009Patents assigned to VARCO INT (24)· patent assignee history
2007–2014Based in Willis, TX, US· patent location history
2011–2014Patents assigned to VARCO I P (2)· patent assignee history
2014Patents assigned to DUFILHO PAUL WILLIAM (1)· patent assignee history
2014Patents assigned to LARSON THOMAS ROBERT (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| VARCO INT | 24 | 2002–2009 |
| TUBOSCOPE I P INC | 19 | 1999–2004 |
| VARCO I P | 2 | 2011–2014 |
| DUFILHO PAUL WILLIAM | 1 | 2014 |
| LARSON THOMAS ROBERT | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Broussard, LA, US | 40 | 1999–2006 |
| Willis, Texas, US | 5 | 2007–2014 |
| Broussar, LA, US | 2 | 2001 |