Average Co-Inventor Count = 3.74
ph-index = 20
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Varco I/p, Inc. (21 from 191 patents)
2. Tuboscope I/p, Inc. (18 from 36 patents)
3. Other (2 from 832,843 patents)
4. Drexel Oilfield Services, Inc. (1 from 5 patents)
5. Yanco I/p, Inc. (1 from 1 patent)
43 patents:
1. 7520391 - Screen assembly for vibratory separator
2. 7175027 - Shaker screen and clamping system
3. 7094297 - Methods for making screen assemblies
4. 7000776 - Screen assembly for vibratory separators
5. 7000777 - Vibratory separator screens
6. 6932883 - Screens for vibratory separators
7. 6899497 - Mobility aid securement for vehicles
8. 6892888 - Screen with unibody structure
9. 6789680 - Screen assembly for vibratory separator
10. 6769550 - Screen assemblies for shale shakers
11. 6736270 - Glued screens for shale shakers
12. 6726029 - Separator screen with solids conveying end area
13. 6722504 - Vibratory separators and screens
14. 6669985 - Methods for making glued shale shaker screens
15. 6662952 - Shale shakers and screens for them