Average Co-Inventor Count = 3.71
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. (3 from 1,209 patents)
3 patents:
1. 7681631 - Automatic false rotary
2. 7370707 - Method and apparatus for handling wellbore tubulars
3. 7314090 - Automatic false rotary