Average Co-Inventor Count = 5.83
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. Onoda Cement Co., Ltd. (2 from 101 patents)
2. Kabushiki Kaisha Kobe Seiko Sho (1 from 1,100 patents)
2 patents:
1. 5094391 - Pneumatic classifier
2. 4611765 - Roller mill