Average Co-Inventor Count = 6.00
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. Onoda Cement Co., Ltd. (1 from 101 patents)
2. Japanese National Railways (1 from 50 patents)
3. Nichireki Chemical Industry Company Limited (1 from 2 patents)
1 patent:
1. 4060425 - Super rapid hardening mixture