Average Co-Inventor Count = 5.00
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. Nippon Zeon Company, Ltd. (2 from 598 patents)
2. Casco Nobel Ab (1 from 16 patents)
2 patents:
1. 5952144 - Production process of toner for development of electrostatic latent image
2. 5217839 - Preparation process of toner