Average Co-Inventor Count = 4.00
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. Rikagaku Kenkyusho (2 from 126 patents)
2 patents:
1. 6138393 - Apparatus for formation of visual sense effect
2. 6134818 - Apparatus for formation of visual sense effect