Average Co-Inventor Count = 5.00
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. Hitachi Chemical Company, Ltd. (2 from 1,641 patents)
2. Shigeru Kudo (0 patent)
3. Yasuhiro Hara (0 patent)
4. Hideo Baba (0 patent)
5. Mitsuhiro Inoue (0 patent)
6. Tadashi Okazaki (0 patent)
2 patents:
1. 5093057 - Clutch driven plates and method of producing the same
2. 5004089 - Clutch driven plates and method of producing the same