Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10607647 | Magnetic disk substrate with specified changes in height or depth between adjacent raised or lowered portions and an offset portion on a main surface within a range of 92.0 to 97.0% in a radial direction from a center, a magnetic disk with substrate and magnetic disk device | Toshio Takizawa, Kraisorn Phandon | 2020-03-31 |
| 9704526 | Glass substrate for magnetic disk and magnetic recording medium | — | 2017-07-11 |
| 9697861 | Magnetic disk substrate with specified changes in height or depth between adjacent raised or lowered portions and an offset portion on a main surface within a range of 92.0 to 97.0% in a radial direction from a center, a magnetic disk with substrate and a magnetic disk device with magnetic disk | Toshio Takizawa, Kraisorn Phandon | 2017-07-04 |
| 9685185 | Glass substrate for magnetic disk and magnetic recording medium | — | 2017-06-20 |
| 9183866 | Magnetic disk substrate with offset portion on a main surface within a range of 92.0 to 97.0% in a radial direction from a center, magnetic disk with substrate and magnetic disk device | Toshio Takizawa, Kraisorn Phandon | 2015-11-10 |
| 9082443 | Glass substrate for magnetic disk and magnetic recording medium | — | 2015-07-14 |
| 8986859 | Magnetic disk substrate, magnetic disk, and magnetic disk device | Toshio Takizawa, Kraisorn Phandon | 2015-03-24 |
| 8895165 | Method of manufacturing a glass substrate for a magnetic disk, glass substrate for a magnetic disk, method of manufacturing a magnetic disk, and magnetic disk | Tadashi Tomonaga | 2014-11-25 |
| 8241768 | Magnetic disk substrate, magnetic disk, and magnetic disk device | Toshio Takizawa, Kraisom Phandon | 2012-08-14 |