Average Co-Inventor Count = 8.31
ph-index = 3
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. (2 from 1,209 patents)
2. Weatherford Technology Holdings, LLC (1 from 892 patents)
3 patents:
1. 10138690 - Apparatus for gripping a tubular on a drilling rig
2. 8567512 - Apparatus for gripping a tubular on a drilling rig
3. 7874352 - Apparatus for gripping a tubular on a drilling rig