Average Co-Inventor Count = 4.80
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. Idemitsu Petrochemical Co., Ltd. (2 from 555 patents)
2 patents:
1. 6639038 - Crystalline polypropylene and its moldings and films
2. 6455659 - Crystalline polypropylene and molded object and film thereof