Average Co-Inventor Count = 4.80
ph-index = 1
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. Nitto-denko Corporation (1 from 3,869 patents)
2. Akzo Nobel N.v. (1 from 1,248 patents)
3. Kanebo, Limited (1 from 305 patents)
2 patents:
1. 6156343 - Controlled release preparation
2. 6077528 - Percutaneous preparation