Average Co-Inventor Count = 9.00
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. Den Norske Stats Oljeselskap A.s. (1 from 146 patents)
1 patent:
1. 4852614 - Shut-off device which can be inserted into a pipeline