Average Co-Inventor Count = 2.00
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. Other (2 from 832,912 patents)
2. Nippon Petrochemicals Company, Limited (2 from 327 patents)
2 patents:
1. 5382448 - Method of manufacturing optical transmission medium from synthetic resin
2. 5253323 - Method of manufacturing a graded optical transmission medium made of