Average Co-Inventor Count = 6.43
ph-index = 3
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. Kabushiki Kaisha Kobe Seiko Sho (3 from 1,100 patents)
2. Onoda Cement Co., Ltd. (1 from 101 patents)
3 patents:
1. 5744017 - Vacuum arc deposition apparatus
2. 5730847 - Arc ion plating device and arc ion plating system
3. 4611765 - Roller mill