Average Co-Inventor Count = 2.00
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. S.d. Warren Company (2 from 19 patents)
2 patents:
1. 7374211 - Rotary joints
2. 7150477 - Rotary joints