Average Co-Inventor Count = 3.43
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. Sumitomo Bakelite Company Limited (2 from 615 patents)
2. Nippon Oil Company (1 from 690 patents)
3. Japan Atomic Energy Research Institute (1 from 321 patents)
2 patents:
1. 5012503 - Method for sterilization of polyvinyl alcohol gel by .gamma.-ray
2. 4897433 - Process for producing an anti-thrombogenic material by graft