Average Co-Inventor Count = 4.66
ph-index = 9
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. Weatherford/lamb, Inc. (14 from 1,209 patents)
2. Weatherford Technology Holdings, LLC (4 from 892 patents)
3. Weatherford U.s., Inc. (1 from 42 patents)
4. H&h Drilling Tools, LLC (1 from 1 patent)
20 patents:
1. 10138690 - Apparatus for gripping a tubular on a drilling rig
2. 9732567 - Interchangeable bail link apparatus and method
3. 9650873 - Landing string compensator
4. 9353603 - Landing string compensator
5. 9212527 - Pipe handling system
6. 8833470 - Pipe handling system
7. 8733447 - Landing string compensator
8. 8567512 - Apparatus for gripping a tubular on a drilling rig
9. 8141642 - Fill up and circulation tool and mudsaver valve
10. 7926577 - Methods and apparatus for supporting tubulars
11. 7874352 - Apparatus for gripping a tubular on a drilling rig
12. 7740078 - Method and device to clamp control lines to tubulars
13. 7681631 - Automatic false rotary
14. 7370707 - Method and apparatus for handling wellbore tubulars
15. 7314090 - Automatic false rotary