Average Co-Inventor Count = 3.46
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. Helmerich & Payne, Inc. (3 from 23 patents)
3 patents:
1. 7290560 - Valve cover locking system
2. 7234388 - Liner retention system
3. 6913097 - Transportation, storage, and installation system for rig utilities