Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12249717 | Carbonaceous material dispersion and method for producing thereof | Mitsuhiro IWAFUNE, Kensuke FUKASAWA, Takao Suzuki, Tomokiyo TAKEYAMA | 2025-03-11 |
| 12076730 | Method for producing carbon material dispersion, carbon material dispersion, and apparatus therefor | Mitsuhiro IWAFUNE, Kensuke FUKASAWA, Tomokiyo TAKEYAMA | 2024-09-03 |
| 6660200 | Manufacturing method for sheet shaped key top | — | 2003-12-09 |
| 6278072 | Sheet-like key top | — | 2001-08-21 |
| 6103346 | Sheet-like key top and its manufacturing method | Kenji Ohgitani, Satoshi Kudo | 2000-08-15 |
| 5820809 | Manufacturing method for key tops | Hiroshi Yajima, Masayuki Kashino, Akihiro Tsuji, Motoshi Yamauchi, Nobuaki Oji | 1998-10-13 |