Average Co-Inventor Count = 5.65
ph-index = 3
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 Steel Corporation (4 from 3,542 patents)
4 patents:
1. 5116504 - Organic polymer separation membrane having fluorene skeleton and oxygen
2. 4975190 - Organic polymer separation membrane having fluorene skeleton and oxygen
3. 4968331 - Organic polymer separation membrane having fluorene skeleton and oxygen
4. 4906550 - Method of producing polydiacetylene thin film