Average Co-Inventor Count = 3.00
ph-index = 4
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. Petroleum Energy Center (2 from 58 patents)
2. Showa Shell Sekiyu Kabushiki Kaisha (2 from 36 patents)
3. Showa Shell Sekiyu K.k. (1 from 46 patents)
4. Petroleum Energy Center and Showa Shell Sekiyu Kabushiki Kaisha (1 from 1 patent)
4 patents:
1. 5677259 - Gas oil desulfurization catalyst and desulfurization method
2. 5330563 - Process for separating a volatile organic compound from a gas
3. 5284717 - Method for producing raw materials for a reformer by cracking and
4. 5149600 - Fuel cell electricity generation process