Average Co-Inventor Count = 5.00
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. Nikka Chemical Industry Co., Ltd. (1 from 4 patents)
2. Chiyoda Chem. Engineering & Constr. Co. (1 from 1 patent)
1 patent:
1. 4537600 - Method for the preparation of pitch-in-water slurry