Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12394440 | Magnetic disk device and method for manufacturing magnetic disk device | Kotaro KITAWAKI, Shinpei Todo, Ryohei Yamada | 2025-08-19 |
| 12243570 | Aluminum alloy substrate for magnetic disc and magnetic disc | Kotaro KITAWAKI, Wataru Kumagai, Ryo Sakamoto | 2025-03-04 |
| 12205616 | Impact resistant magnetic disk device and method for manufacturing impact resistant magnetic disk device | Kotaro KITAWAKI, Ryohei Yamada, Shinpei Todo | 2025-01-21 |
| 12087342 | Aluminum alloy disc blank for magnetic disc and magnetic disc | Kotaro KITAWAKI, Ryo Sakamoto, Wataru Kumagai, Ryohei Yamada, Shinpei Todo +1 more | 2024-09-10 |
| 12033665 | Thin substrate built-in hard disk drive and base plate member for thin substrate built-in hard disk drive | Kotaro KITAWAKI, Wataru Kumagai, Ryo Sakamoto | 2024-07-09 |
| 11935559 | Magnetic disk device | Naoki Kitamura, Kotaro KITAWAKI, Ryohei Yamada, Toshihiro Nakamura | 2024-03-19 |
| 11482251 | Aluminum alloy substrate for magnetic disk and method for manufacturing same, aluminum alloy base disk for magnetic disk and method for manufacturing same, and magnetic disk and method for manufacturing the same | Takuya Murata, Kotaro KITAWAKI, Makoto Yonemitsu, Ryo Sakamoto, Hiroki Ota | 2022-10-25 |
| 11423937 | Aluminum alloy substrate for magnetic disk, method for producing the same, and magnetic disk using aluminum alloy substrate for magnetic disk | Kotaro KITAWAKI, Takashi Nakayama, Yasuo Fujii, Wataru Kumagai | 2022-08-23 |
| 11404082 | Aluminium alloy substrate for magnetic disk, method for fabricating the same, and magnetic disk composed of aluminium alloy substrate for magnetic disk | Kotaro KITAWAKI, Makoto Yonemitsu, Takashi Nakayama, Kimie IMAKAWA | 2022-08-02 |
| 11361791 | Aluminum alloy sheet for magnetic disk and production method therefor, and magnetic disk using said aluminum alloy sheet for magnetic disk | Kotaro KITAWAKI, Makoto Yonemitsu, Sadayuki Toda, Ryo Sakamoto, Yasuo Fujii | 2022-06-14 |
| 11341995 | Aluminum alloy sheet for magnetic disk and production method therefor, and magnetic disk using said aluminum alloy sheet for magnetic disk | Kotaro KITAWAKI, Yu Igarashi, Keisuke KAMIYA, Yu Matsui, Makoto Yonemitsu +2 more | 2022-05-24 |
| 11270730 | Magnetic disk substrate, method for manufacturing same and magnetic disk | Takuya Murata, Kotaro KITAWAKI, Makoto Yonemitsu, Yasuo Fujii, Ryo Sakamoto +1 more | 2022-03-08 |
| 11208710 | Aluminum alloy substrate for magnetic disks, method for producing same, and magnetic disk using this aluminum alloy substrate for magnetic disks | Kotaro KITAWAKI, Takuya Murata, Makoto Yonemitsu, Kouichiro Takiguchi, Takashi Nakayama +2 more | 2021-12-28 |
| 11211088 | Magnetic disc, aluminum alloy substrate for magnetic disc, and production method for aluminum alloy substrate | Takuya Murata, Kotaro KITAWAKI, Makoto Yonemitsu, Takashi Nakayama, Ryo Sakamoto +1 more | 2021-12-28 |
| 11037594 | Aluminum-alloy substrate for magnetic disk, method for manufacturing same and magnetic disk employing said aluminum-alloy substrate for magnetic disk | Kotaro KITAWAKI, Makoto Yonemitsu, Takashi Nakayama, Yasuo Fujii, Ryo Sakamoto | 2021-06-15 |
| 10767247 | Aluminum alloy magnetic disk substrate and method for producing same | Takuya Murata, Kotaro KITAWAKI, Makoto Yonemitsu, Naoki Kitamura, Takashi Nakayama +2 more | 2020-09-08 |
| 10165278 | Image compression device, image compression method, image extension device, and image extension method | — | 2018-12-25 |
| 8959342 | Communication apparatus | — | 2015-02-17 |
| 8213450 | Communication apparatus | — | 2012-07-03 |
| 8200973 | Method and apparatus for encrypted authentication | Akihiro Kubota | 2012-06-12 |
| 7539865 | Data transfer device | — | 2009-05-26 |
| 7009746 | Polygon mirror and method of manufacturing the same, optical scanner and electrophotograph | Yasuhiro Matsuo | 2006-03-07 |
| 6695458 | High-reflectance silver mirror and reflecting optical element | Masanobu Ohgane | 2004-02-24 |
| 6665120 | Reflective optical element | Masanobu Ohgane | 2003-12-16 |
| 6648482 | Polygon mirror and method of manufacturing the same, optical scanner and electrophotograph | Yasuhiro Matsuo | 2003-11-18 |