Average Co-Inventor Count = 2.36
ph-index = 6
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. Hydril Company (7 from 277 patents)
2. Hydril USA Manufacturing LLC (4 from 67 patents)
11 patents:
1. 8230930 - Mounts for blowout preventer bonnets and methods of use
2. 7802626 - Mounts for blowout preventer bonnets and methods of use
3. 7699554 - Removable seal carrier for blowout preventer bonnet assembly
4. 7413019 - Mounts for blowout preventer bonnets
5. 7281586 - Mounts for blowout preventer bonnets
6. 7246666 - Mounts for blowout preventer bonnets
7. 7121348 - Mounts for blowout preventer bonnets
8. 7096960 - Mounts for blowout preventer bonnets
9. 6845959 - Quick release blowout preventer bonnet
10. 6554247 - Quick release blowout preventer bonnet
11. 6510897 - Rotational mounts for blowout preventer bonnets