Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12243570 | Aluminum alloy substrate for magnetic disc and magnetic disc | Kotaro KITAWAKI, Hideyuki Hatakeyama, Ryo Sakamoto | 2025-03-04 |
| 12087342 | Aluminum alloy disc blank for magnetic disc and magnetic disc | Kotaro KITAWAKI, Ryo Sakamoto, 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 | Kotaro KITAWAKI, Hideyuki Hatakeyama, Ryo Sakamoto | 2024-07-09 |
| 11721361 | Aluminum alloy substrate for magnetic disks, method for producing same, and magnetic disk using said aluminum alloy substrate for magnetic disks | Kotaro KITAWAKI, Takuya Murata, Makoto Yonemitsu, Yu Matsui, Yasuo Fujii +2 more | 2023-08-08 |
| 11423937 | Aluminum alloy substrate for magnetic disk, method for producing the same, and magnetic disk using aluminum alloy substrate for magnetic disk | Kotaro KITAWAKI, Hideyuki Hatakeyama, Takashi Nakayama, Yasuo Fujii | 2022-08-23 |
| 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, Naoki Kitamura +1 more | 2022-05-17 |
| 9559984 | Communication system and network relay device | Tomoyoshi Tatsumi | 2017-01-31 |
| 9385971 | Communication system and network relay device | Nozomi Hashimoto | 2016-07-05 |
| 9306845 | Communication system and network relay device | Hiroshi Ishizaki | 2016-04-05 |