Average Co-Inventor Count = 5.46
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. Otsuka Pharmaceutical Company, Limited (2 from 845 patents)
2 patents:
1. 5607934 - Piperazine derivatives and salts thereof
2. 5459142 - Pyrazinyl and piperazinyl substituted pyrazine compounds