Average Co-Inventor Count = 7.61
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. Kyowa Hakko Kogyo Co., Ltd. (4 from 730 patents)
4 patents:
1. 6306847 - Condensed purine derivatives
2. 6222035 - [1,2,4] triazolo [1,5-C] pyrimidine derivatives
3. 5646283 - Tetracyclic compound
4. 5371225 - Tetracyclic compounds