Average Co-Inventor Count = 4.32
ph-index = 2
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. Dril-quip, Inc. (4 from 170 patents)
4 patents:
1. 9228397 - Systems and methods for riser coupling
2. 9222318 - Systems and methods for riser coupling
3. 9206654 - Systems and methods for riser coupling
4. 8978770 - Systems and methods for riser coupling