Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12315481 | Keyboard instrument | Shingo FUKUSHIMA, Kouji OSHIMA, Naoto IMAMURA, Yuuki NAKAJIMA, Mari NAKAJIMA | 2025-05-27 |
| 12138921 | Inkjet head driving method and inkjet recording apparatus | — | 2024-11-12 |
| 12104228 | Aluminum alloy plate, terminal, electric wire with terminal, and bus bar | Toru Maeda, Tetsuya Kuwabara, Masashi Fujiki, Akihiro Hayashi | 2024-10-01 |
| 12060521 | Oil recovery agent, oil dispersion, and oil recovery method | Tomoya Fujita | 2024-08-13 |
| 12003918 | Electronic musical instrument and electronic keyboard instrument | Hiroki AKAI, Teruo Jinbo, Kouji OSHIMA, Shingo FUKUSHIMA | 2024-06-04 |
| 11920221 | Aluminum alloy sheet | Tomoyuki Kudo | 2024-03-05 |
| 11694664 | Keyboard musical instrument | Kouji OSHIMA, Yuuki NAKAJIMA, Naoto IMAMURA, Shingo FUKUSHIMA, Mari NAKAJIMA | 2023-07-04 |
| 11594205 | Switch device, electronic apparatus, and electronic musical instrument | Naoto IMAMURA, Kouji OSHIMA, Yuuki NAKAJIMA, Mari NAKAJIMA, Shingo FUKUSHIMA | 2023-02-28 |
| 11440315 | Ink jet recording apparatus and ink jet recording method | Kenji Mawatari, Masanori Shimazoe | 2022-09-13 |
| 10036483 | Electromagnetic valve and fixing structure | Shunsuke Hiyama, Yasuhide Takada, Kei HARADA | 2018-07-31 |
| 9732875 | Electromagnetic valve and fixing structure | Shunsuke Hiyama, Yasuhide Takada, Kei HARADA | 2017-08-15 |
| 9387678 | Liquid droplet injection apparatus and method for recovering nozzle of liquid droplet injection apparatus | — | 2016-07-12 |
| 9366356 | Electromagnetic valve and fixing structure | Shunsuke Hiyama, Yasuhide Takada, Kei HARADA | 2016-06-14 |
| 9228672 | Electromagnetic valve and fixing structure | Shunsuke Hiyama, Yasuhide Takada, Kei HARADA | 2016-01-05 |
| 9216576 | Inkjet head with damper member in common ink chamber, and method for driving inkjet head | Masato Ueda, Kazuki Hiejima | 2015-12-22 |
| 4770721 | Process of treating steel for a vehicle suspension spring to improve sag-resistance | Toshiro Yamamoto, Mamoru Kurimoto, Toshio Ozone | 1988-09-13 |
| 4711675 | Process for improving the sag-resistance and hardenability of a spring steel | Toshiro Yamamoto, Mamoru Kurimoto, Toshio Ozone | 1987-12-08 |
| 4574016 | Method of treating steel for a vehicle suspension spring having a good sag-resistance | Toshiro Yamamoto, Mamoru Kurimoto, Toshio Ozone | 1986-03-04 |
| 4544406 | Spring steel having a good sag-resistance and a good hardenability | Toshiro Yamamoto, Mamoru Kurimoto, Toshio Ozone | 1985-10-01 |
| 4448617 | Steel for a vehicle suspension spring having good sag-resistance | Toshiro Yamamoto, Mamoru Kurimoto, Toshio Ozone | 1984-05-15 |