Average Co-Inventor Count = 4.00
ph-index = 1
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. Nihon University (1 from 108 patents)
2. Kokusai Microfilm Co., Inc. (1 from 1 patent)
1 patent:
1. 7144461 - Method of removing acid component in deteriorated acetate film