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. Tonen Corporation (2 from 141 patents)
2 patents:
1. 6306289 - Catalyst for hydrogenation treatment and method for hydrogenation treatment of hydrocarbon oil
2. 5944983 - Hydrotreating catalyst and hydrotreating process of hydrocarbon oil by