Average Co-Inventor Count = 13.00
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. Hitachi Plant Engineering Construction Co., Ltd. (1 from 56 patents)
2. Japan Sewage Works Agency (1 from 3 patents)
3. Hiroki Nakamura (0 patent)
4. Takashi Kimata (0 patent)
5. Syouji Harada (0 patent)
6. Yuuko Fujii (0 patent)
7. Masami Hotta (0 patent)
8. Minoru Tada (0 patent)
9. Tamotsu Mizuguchi (0 patent)
10. Syuzo Koike (0 patent)
11. Hiroyoshi Emori (0 patent)
12. Tatsuo Sumino (0 patent)
13. Yukio Kawaguchi (0 patent)
14. Toshio Yamadera (0 patent)
15. Naomichi Mori (0 patent)
1 patent:
1. 5061368 - System for treating waste water by nitrification