Average Co-Inventor Count = 1.00
ph-index = 1
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. A/s Hoyer-ellefsen (1 from 11 patents)
1 patent:
1. 4087984 - Marine structure for drilling after and/or production of hydrocarbons