Average Co-Inventor Count = 2.00
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. Den Norske Stats Oljeselskap A.s. (2 from 146 patents)
2 patents:
1. 5112698 - Ceramic coating
2. 4988538 - Ceramic coating