Average Co-Inventor Count = 4.64
ph-index = 1
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. The Charles Machine Works, Inc. (3 from 364 patents)
2. Helmerich & Payne, Inc. (1 from 23 patents)
4 patents:
1. 12359514 - Systems and methods for make-up and break-out of drill pipe
2. 11708725 - Drill string rotation brake
3. 11041342 - Drill string rotation brake
4. 10407991 - Drill string rotation brake