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. The British Petroleum Company, P.l.c. (2 from 558 patents)
2 patents:
1. 4297150 - Protective metal oxide films on metal or alloy substrate surfaces
2. 4099990 - Method of applying a layer of silica on a substrate