Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12020735 | Substrate for magnetic disk and magnetic disk | — | 2024-06-25 |
| 11705158 | Method for manufacturing ring-shaped glass spacer | Masao Takano | 2023-07-18 |
| 11682425 | Glass spacer, hard disk drive apparatus, and method for manufacturing glass spacer | Kinobu Osakabe, Yoshitake Tanno, Mikio Ikenishi | 2023-06-20 |
| 11640833 | Substrate for magnetic disk and magnetic disk | — | 2023-05-02 |
| 11244706 | Glass spacer and hard disk drive apparatus | Masao Takano | 2022-02-08 |
| 11031038 | Glass spacer, hard disk drive apparatus, and method for manufacturing glass spacer | Kinobu Osakabe, Yoshitake Tanno, Mikio Ikenishi | 2021-06-08 |
| 10783921 | Glass spacer and hard disk drive apparatus | Masao Takano | 2020-09-22 |
| 9085479 | Glass substrate for magnetic disk and manufacturing method thereof | Hideki Isono | 2015-07-21 |
| 9085486 | Glass substrate for a magnetic disk and magnetic disk | Hideki Isono, Takashi Maeda, Hiroshi Tsuchiya, Yoshinori Marumo | 2015-07-21 |
| 9003834 | Glass substrate for magnetic disk and manufacturing method thereof | Hideki Isono | 2015-04-14 |
| 8973404 | Manufacturing method of glass substrate for magnetic disk, manufacturing method of glass blank, glass substrate for magnetic disk, and glass blank | Hideki Isono | 2015-03-10 |
| 8869559 | Method of manufacturing a glass substrate for magnetic disk | Hideki Isono | 2014-10-28 |
| 8806893 | Manufacturing method of a glass blank for magnetic disk and manufacturing method of a glass substrate for magnetic disk | Hideki Isono, Akira Murakami | 2014-08-19 |
| 8806895 | Manufacturing method for a glass substrate for magnetic disk | Hideki Isono, Akira Murakami | 2014-08-19 |
| 8783063 | Glass substrate for magnetic disk and manufacturing method of the same | Kinobu Osakabe, Hideki Isono, Katsuyuki Iwata, Kenichiro Terada | 2014-07-22 |
| 8785010 | Glass substrate for a magnetic disk and magnetic disk | Hideki Isono, Takashi Maeda, Hiroshi Tsuchiya, Yoshinori Marumo | 2014-07-22 |
| 8733129 | Glass substrate for magnetic disk and manufacturing method thereof | Hideki Isono | 2014-05-27 |
| 8640497 | Method of manufacturing glass substrate for magnetic disk and system for manufacturing glass substrate for magnetic disk | Ryuuichi Kashima, Hideki Isono, Tomotaka Yokoyama, Tadashi Tomonaga, Kraisorn Phandon +1 more | 2014-02-04 |
| 8119267 | Glass substrate for magnetic disk and manufacturing method of the same | Kinobu Osakabe, Hideki Isono, Katsuyuki Iwata, Kenichiro Terada | 2012-02-21 |
| 7703303 | Magnetic disk glass substrate manufacturing method | Hideki Isono, Kazuhiko Maeda, Naohiro Kamiya, Nobuyuki Eto | 2010-04-27 |
| 6534120 | Chemically reinforced glass manufacture method, information recording medium glass substrate manufacture method, information recording medium manufacture method, and chemical reinforcement device | Jun Ozawa | 2003-03-18 |
| 6430965 | Process for producing glass substrate for information recording medium and process for producing recording medium using said glass substrate | Jun Ozawa | 2002-08-13 |
| 6427489 | Process for producing glass substrate for information recording medium and process for producing recording medium using said glass substrate | Jun Ozawa | 2002-08-06 |
| 6134918 | Method of fabricating glass substrate for magnetic disk and method of fabricating magnetic disk | Nobuyuki Eto, Koji Takahashi | 2000-10-24 |
| 6119483 | Process for producing glass substrate for information recording medium | Koji Takahashi, Kazuhiko Maeda, Jun Ozawa, Katsutoshi Ono, Kinobu Osakabe +1 more | 2000-09-19 |