Average Co-Inventor Count = 13.11
ph-index = 3
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. Eisai Company, Limited (4 from 677 patents)
4 patents:
1. 6703388 - Nitrogen-containing tricyclic compounds and drugs containing the same
2. 6583138 - Heterocyclic-ring condensed benzothiazine compound
3. 6489336 - Nitrogen-containing tricyclic compounds and drugs containing the same
4. 6333322 - Nitrogen-containing tricyclic compounds and drugs containing the same