Average Co-Inventor Count = 2.40
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. Mitsui Toatsu Chemicals, Incorporated (2 from 1,379 patents)
2 patents:
1. 4459234 - Process for producing anthraquinone
2. 4440920 - Aromatic polyesters