Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12160984 | Radio wave absorber | Hirokazu Hashimoto | 2024-12-03 |
| 11721461 | Particles of magnetoplumbite-type hexagonal ferrite, method for manufacturing the same, and radio wave absorber | Yoichi Hosoya, Tatsuo Mikami | 2023-08-08 |
| 11705156 | Hexagonal strontium ferrite powder, magnetic recording medium, and magnetic recording and reproducing apparatus | Kenji Naoi | 2023-07-18 |
| 11574652 | Recording device and recording method | Shin-ichi Ohkoshi, Marie YOSHIKIYO, Kenta Imoto, Kosuke Nakagawa, Asuka Namai +3 more | 2023-02-07 |
| 11562839 | Core-shell particle and manufacturing method and fired product of the same, epsilon type iron oxide compound particle and manufacturing method of the same, and magnetic recording medium and manufacturing method of the same | Kenji Naoi, Takashi Fujimoto | 2023-01-24 |
| 11488627 | Ferromagnetic powder for magnetic recording and magnetic recording medium | Kenji Naoi | 2022-11-01 |
| 11459244 | Particles of β-iron oxyhydroxide-based compound, manufacturing method of the same, manufacturing method of particles of ϵ-iron oxide-based compound, and manufacturing method of magnetic recording medium | Kenji Naoi, Takashi Fujimoto | 2022-10-04 |
| 11348711 | Core-shell particle, fired product of core-shell particle, manufacturing method of core-shell particle, epsilon type iron oxide-based compound particle, manufacturing method of epsilon type iron oxide-based compound particle, magnetic recording medium, and manufacturing method of magnetic recording medium | Kenji Naoi, Takashi Fujimoto | 2022-05-31 |
| 11315595 | Recording method, recording device, reproduction method, reproduction device, and high-speed response element | Shin-ichi Ohkoshi, Makoto Nakajima, Hiroaki Doshita | 2022-04-26 |
| 11244701 | Hexagonal strontium ferrite powder for magnetic recording and magnetic recording medium | Kenji Naoi | 2022-02-08 |
| 11222661 | Hexagonal strontium ferrite powder, magnetic recording medium, and magnetic recording and reproducing apparatus | Kenji Naoi | 2022-01-11 |
| 11170812 | Magnetic recording medium including specified compound, magnetic recording and reproducing apparatus, and composition for magnetic recording medium | Kenji Naoi, Wataru Kikuchi | 2021-11-09 |
| 11100949 | Magnetic recording medium | Takashi Fujimoto | 2021-08-24 |
| 11090716 | ϵ-iron oxide type ferromagnetic powder and magnetic recording medium | Takashi Fujimoto | 2021-08-17 |
| 10734144 | Production method for metal oxide particles, metal oxide powder, and magnetic recording medium | Yoichi Hosoya | 2020-08-04 |
| 10373638 | Hexagonal ferrite powder and magnetic recording medium | Yoichi Hosoya | 2019-08-06 |
| 10102874 | Method of manufacturing hexagonal ferrite powder, hexagonal ferrite powder, and magnetic recording medium | — | 2018-10-16 |
| 9957167 | Method of manufacturing hexagonal ferrite powder, hexagonal ferrite powder, magnetic recording medium and method of manufacturing magnetic recording medium | — | 2018-05-01 |
| 9773518 | Magnetic recording medium | — | 2017-09-26 |
| 9748026 | Hexagonal ferrite magnetic powder for magnetic recording, method for producing hexagonal ferrite magnetic particles, and magnetic recording medium | — | 2017-08-29 |
| 9589585 | Magnetic powder for magnetic recording, magnetic recording medium, and method of manufacturing magnetic powder for magnetic recording | — | 2017-03-07 |
| 9589584 | Magnetic powder for magnetic recording, magnetic recording medium, and method of manufacturing magnetic powder for magnetic recording | — | 2017-03-07 |
| 8558447 | Dispersion-type electroluminescence device | — | 2013-10-15 |
| 7990057 | Surface emitting-type electroluminescent device | Seiji Yamashita, Tadanobu Sato | 2011-08-02 |
| 7974467 | Image-taking system | Toshihiko Kaku, Masahiro Kubo | 2011-07-05 |