Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12394440 | Magnetic disk device and method for manufacturing magnetic disk device | Shinpei Todo, Ryohei Yamada, Hideyuki Hatakeyama | 2025-08-19 |
| 12243570 | Aluminum alloy substrate for magnetic disc and magnetic disc | Hideyuki Hatakeyama, Wataru Kumagai, Ryo Sakamoto | 2025-03-04 |
| 12205616 | Impact resistant magnetic disk device and method for manufacturing impact resistant magnetic disk device | Ryohei Yamada, Shinpei Todo, Hideyuki Hatakeyama | 2025-01-21 |
| 12087342 | Aluminum alloy disc blank for magnetic disc and magnetic disc | Ryo Sakamoto, Wataru Kumagai, Hideyuki Hatakeyama, 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 | Hideyuki Hatakeyama, Wataru Kumagai, Ryo Sakamoto | 2024-07-09 |
| 11935559 | Magnetic disk device | Naoki Kitamura, Hideyuki Hatakeyama, Ryohei Yamada, Toshihiro Nakamura | 2024-03-19 |
| 11721361 | Aluminum alloy substrate for magnetic disks, method for producing same, and magnetic disk using said aluminum alloy substrate for magnetic disks | Takuya Murata, Makoto Yonemitsu, Yu Matsui, Yasuo Fujii, Ryo Sakamoto +2 more | 2023-08-08 |
| 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, Makoto Yonemitsu, Hideyuki Hatakeyama, 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 | Hideyuki Hatakeyama, 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 | Makoto Yonemitsu, Takashi Nakayama, Kimie IMAKAWA, Hideyuki Hatakeyama | 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 | Makoto Yonemitsu, Hideyuki Hatakeyama, 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 | Yu Igarashi, Keisuke KAMIYA, Yu Matsui, Makoto Yonemitsu, Ryo Sakamoto +2 more | 2022-05-24 |
| 11335367 | Aluminum alloy substrate for magnetic disk, disk drive device, method for manufacturing aluminum alloy substrate for magnetic disk, and method for measuring aluminum alloy substrate for magnetic disk | Kimie IMAKAWA, Toshihiro Nakamura, Hideki Takahashi, Keita YOSHIMURA, Wataru Kumagai +1 more | 2022-05-17 |
| 11270730 | Magnetic disk substrate, method for manufacturing same and magnetic disk | Takuya Murata, Makoto Yonemitsu, Yasuo Fujii, Ryo Sakamoto, Hideyuki Hatakeyama +1 more | 2022-03-08 |
| 11211088 | Magnetic disc, aluminum alloy substrate for magnetic disc, and production method for aluminum alloy substrate | Takuya Murata, Makoto Yonemitsu, Hideyuki Hatakeyama, Takashi Nakayama, Ryo Sakamoto +1 more | 2021-12-28 |
| 11208710 | Aluminum alloy substrate for magnetic disks, method for producing same, and magnetic disk using this aluminum alloy substrate for magnetic disks | Takuya Murata, Makoto Yonemitsu, Kouichiro Takiguchi, Takashi Nakayama, Kimie IMAKAWA +2 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 | Makoto Yonemitsu, Hideyuki Hatakeyama, Takashi Nakayama, Yasuo Fujii, Ryo Sakamoto | 2021-06-15 |
| 10767247 | Aluminum alloy magnetic disk substrate and method for producing same | Takuya Murata, Makoto Yonemitsu, Naoki Kitamura, Takashi Nakayama, Hideyuki Hatakeyama +2 more | 2020-09-08 |
| 10755738 | Aluminum alloy substrate for magnetic discs and manufacturing method therefor, as well as magnetic disc using said aluminum alloy substrate for magnetic discs | Takuya Murata, Akira Hibino, Naoki Kitamura, Masanobu Onishi, Hideki Takahashi +2 more | 2020-08-25 |
| 10408550 | Heat exchanger, and fin material for said heat exchanger | Takashi Murase, Tomohito Kurosaki, Junji Ninomiya | 2019-09-10 |
| 9789564 | Manufacturing method of heat exchanger, and heat exchanger manufactured by such manufacturing method | Akira Yanagida, Shoei Teshima, Takeshi Iguchi, Masakazu Morimoto, Kazuyoshi Nakashima +1 more | 2017-10-17 |
| 9613648 | Aluminum alloy plate for magnetic disc substrate, method for manufacturing same, and method for manufacturing magnetic disc | Minoru Hayashi, Yoshiji Hashimoto, Toshikazu Hisamoto | 2017-04-04 |