Average Co-Inventor Count = 3.00
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. Mitsubishi Kasei Engineering Company (1 from 7 patents)
2. Ryoka Techno Engineering & Construction Co. (1 from 4 patents)
2 patents:
1. 5295805 - Rotating cylindrical treatment apparatus
2. 5277108 - Rotating cylindrical treatment apparatus