Average Co-Inventor Count = 3.43
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. Nitto-Denko Corporation (1 from 3,872 patents)
2. Nitto Electric Industrial Co., Ltd. (1 from 172 patents)
2 patents:
1. 4863952 - Method of promoting percutaneous drug absorption with 2-pyrrolidin-2-one
2. 4847260 - Composition for percutaneous administration