Average Co-Inventor Count = 4.80
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. Toa Nenryo Kogyo Kabushiki Kaisha (2 from 220 patents)
2. Oki Electric Industry Co., Ltd. (1 from 4,979 patents)
2 patents:
1. 4837193 - Hydrotreating catalyst and process of manufacture
2. 4812634 - IC card with a solar battery