Average Co-Inventor Count = 3.43
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. Combustion Engineering, Inc. (1 from 1,102 patents)
2. Vetco Offshore, Inc. (1 from 26 patents)
2 patents:
1. 4580630 - Mudline casing hanger assembly
2. 4534583 - Mudline casing hanger assembly