Average Co-Inventor Count = 2.29
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. Parker-hannifin Corporation (4 from 1,663 patents)
4 patents:
1. 9212525 - Riser clamp
2. 8950501 - Riser clamp
3. 8789605 - Riser clamp
4. 6883804 - Seal ring having secondary sealing lips