Average Co-Inventor Count = 9.26
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. Ihara Chemical Industry Co., Ltd. (2 from 211 patents)
2. Yoshie Hara (0 patent)
3. Keiko Maeda (0 patent)
4. Kunio Kataoka (0 patent)
5. Satoru Shimoyama (0 patent)
6. Ujo Maeda (0 patent)
7. Susumu Shimoyama (0 patent)
8. Kazumi Konya (0 patent)
9. Mieko Goto (0 patent)
10. Eiichi Eto (0 patent)
11. Tasuku Shimoyama (0 patent)
12. Yasuko Noda (0 patent)
2 patents:
1. 5358538 - Process for production of black coloring material and cosmetics
2. 5244469 - Process for preparation of black coloring materials and application