Average Co-Inventor Count = 5.00
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. Tohoku University (1 from 986 patents)
2. Kake Educational Institution (1 from 9 patents)
1 patent:
1. 11147796 - Agent for preventing or ameliorating hearing impairment