Ichihara, JP ranks #4,368 worldwide for total patents filed all time, with 635 patents from 17 inventors. Leading employers of inventors based in Ichihara, JP include Ricoh Company, Toyota, Semiconductor Energy Laboratory.
Showing 1–17 of 17 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Masayuki Hayashi | Ricoh Company | 141 |
| 2 | Masaki Ito | Toyota | 117 |
| 3 | Yasunori Yoshida | Semiconductor Energy Laboratory | 77 |
| #4 | Seiji Hori | Dow Corning Toray Co. | 71 |
| #5 | Akira Hoshino | Toyota | 57 |
| #6 | Hitoshi Hayakawa | Seiko Epson | 45 |
| #7 | Takashi Furusawa | Dic | 21 |
| #7 | Shinsuke Matsumoto | Funai Electric Co. | 21 |
| #9 | Nobuhiro Mizuno | Denso | 18 |
| #10 | Tetsuya Katoh | Denso | 14 |
| #11 | Yasumasa Watanabe | Resonac | 12 |
| #12 | Shigeru Sakakibara | Inax | 11 |
| #13 | Akiyoshi Tamai | Toray Industries | 10 |
| #14 | Yukio Adachi | Mitsubishi Electric | 8 |
| #15 | Katsuhiro Shibayama | Toray Industries | 4 |
| #15 | Akio Uehara | Sumitomo Heavy Industries | 4 |
| #15 | Mikio Matsufuji | Mitsui Chemicals | 4 |