Average Co-Inventor Count = 1.50
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. Tokico, Ltd. (2 from 548 patents)
2 patents:
1. 4954536 - Brake-friction material
2. 3961029 - Process for recovering chromic acid solution from a waste liquor