Average Co-Inventor Count = 4.00
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. Seishi Gijutsu Kenkyu Kumiai (1 from 1 patent)
1 patent:
1. 4812208 - Headbox for paper machine with parallel twisted plates