Average Co-Inventor Count = 6.43
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 Factory, Inc. (3 from 188 patents)
3 patents:
1. 5798344 - Phosphonic ester derivatives of quinazolinones
2. 5624918 - Phosphonic diester derivatives
3. 5496844 - Indole derivatives