Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12190923 | Substrate for magnetic disk, magnetic disk, and hard disk drive apparatus | — | 2025-01-07 |
| 12094506 | Magnetic-disk substrate and magnetic disk | Masanobu Itaya, Toshio Takizawa | 2024-09-17 |
| 11955151 | Substrate for magnetic disk and magnetic disk | — | 2024-04-09 |
| 11694718 | Substrate for magnetic disk, magnetic disk, and hard disk drive apparatus | — | 2023-07-04 |
| 11682424 | Magnetic-disk substrate, magnetic disk, and magnetic-disk drive device | Masanobu Itaya | 2023-06-20 |
| 11682425 | Glass spacer, hard disk drive apparatus, and method for manufacturing glass spacer | Shinji Eda, Yoshitake Tanno, Mikio Ikenishi | 2023-06-20 |
| 11587585 | Magnetic-disk substrate and magnetic disk | Masanobu Itaya, Toshio Takizawa | 2023-02-21 |
| 11545178 | Substrate for magnetic disk and magnetic disk | — | 2023-01-03 |
| 11152026 | Substrate for magnetic disks, and magnetic disk | — | 2021-10-19 |
| 11094345 | Magnetic-disk substrate, magnetic disk, and magnetic-disk drive device | Masanobu Itaya | 2021-08-17 |
| 11081134 | Hard disk drive with magnetic-disk substrate and hard disk drive with magnetic disk | Masanobu Itaya, Toshio Takizawa | 2021-08-03 |
| 11031038 | Glass spacer, hard disk drive apparatus, and method for manufacturing glass spacer | Shinji Eda, Yoshitake Tanno, Mikio Ikenishi | 2021-06-08 |
| 11031036 | Non-magnetic substrate for magnetic disk, and magnetic disk | — | 2021-06-08 |
| 10497387 | Magnetic-disk substrate and magnetic disk | Masanobu Itaya | 2019-12-03 |
| 10319403 | Magnetic-disk substrate, magnetic disk, and method for manufacturing magnetic-disk substrate | Masanobu Itaya | 2019-06-11 |
| 10283156 | Magnetic-disk substrate and magnetic disk | Masanobu Itaya, Toshio Takizawa | 2019-05-07 |
| 9607647 | Magnetic-disk glass substrate and magnetic disk | Masanobu Itaya | 2017-03-28 |
| 9589586 | Glass for magnetic recording media substrates, magnetic recording media substrates, magnetic recording media and method for preparation thereof | Yoichi Hachitani | 2017-03-07 |
| 9564166 | Magnetic-disk glass substrate and magnetic disk | Masanobu Itaya, Toshio Takizawa | 2017-02-07 |
| 9236077 | Glass for use as substrate for information recording medium, substrate for information recording medium and information recording medium, and their production methods | Kazuo Tachiwana, Yoichi Hachitani, Xuelu Zou, Mikio Ikenishi | 2016-01-12 |
| 9016092 | Glass for magnetic recording media substrates, magnetic recording media substrates, magnetic recording media and method for preparation thereof | Yoichi Hachitani | 2015-04-28 |
| 8783063 | Glass substrate for magnetic disk and manufacturing method of the same | Hideki Isono, Katsuyuki Iwata, Shinji Eda, Kenichiro Terada | 2014-07-22 |
| 8785011 | Glass for use as substrate for information recording medium, substrate for information recording medium and information recording medium, and their production methods | Kazuo Tachiwana, Yoichi Hachitani, Xuelu Zou, Mikio Ikenishi | 2014-07-22 |
| 8652660 | Glass substrate for magnetic recording medium and its use | Hideki Isono, Katsuyuki Iwata, Mikio Ikenishi, Naomi Matsumoto | 2014-02-18 |
| 8603653 | Glass for magnetic recording medium substrate, magnetic recording medium substrate and method of manufacturing the same, and magnetic recording medium | Naomi Matsumoto, Yoichi Hachitani | 2013-12-10 |