Average Co-Inventor Count = 11.00
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. Sankyo Company, Limited (2 from 613 patents)
2 patents:
1. 4005094 - Piperidine-spiro-hydantoin derivatives
2. 3941744 - Piperidine derivatives and their use as stabilizers