Average Co-Inventor Count = 5.09
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 patents:
1. 5912102 - Positive resist composition
2. 5376497 - Positive quinone diazide sulfonic acid ester resist composition