Average Co-Inventor Count = 7.00
ph-index = 1
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. Kabushiki Kaisha Riken (1 from 219 patents)
2. Kozo Izuka, Director-General of Agency of Industrial Science and (1 from 1 patent)
1 patent:
1. 5108977 - Catalyst for cleaning exhaust gas