Average Co-Inventor Count = 4.44
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. Hisamitsu Pharmaceutical Company, Inc. (2 from 375 patents)
2 patents:
1. 8420117 - Patch formulation for external use
2. 6139866 - Tape formulation for percutaneous administration containing fentanyi