Average Co-Inventor Count = 1.00
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. Ariyoshi Nakamura (1 from 1 patent)
2. Nihon Pharmaceutical Co., Ltd (5 patents)
1 patent:
1. 4704885 - Apparatus for making connecting pipes for connecting ducts