Average Co-Inventor Count = 8.89
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 Pharmaceuticals Company Limited (2 from 174 patents)
2. Other (1 from 832,680 patents)
3. Koken Company, Limited (1 from 54 patents)
4. Masahiko Yamamoto (1 from 1 patent)
2 patents:
1. 5800390 - Equipment for intracerebral administration of preparations
2. 5759991 - Neurotrophic peptide derivatives