Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7622205 | Disk substrate for a perpendicular magnetic recording medium and a perpendicular magnetic recording medium using the substrate | Hiroyuki Uwazumi, Youichi Tei, Kazuhito Higuchi, Akira Iso, Hajime Kurihara | 2009-11-24 |
| 7428828 | Press die of disk with shaft shaped portion | Tatsumi Kawata, Kazuo Nimura, Kunio Hibino, Hidenao Kataoka | 2008-09-30 |
| 7313930 | Method and apparatus for manufacturing glass substrate for storage medium | Tatsumi Kawata, Kunio Hibino, Tomokazu Tokunaga | 2008-01-01 |
| 6997019 | Molding process of disk with shaft shaped portion | Tatsumi Kawata, Kazuo Nimura, Kunio Hibino, Hidenao Kataoka | 2006-02-14 |
| 5889813 | Levitation melting furnace | Michiru Fujita, Tatsuo Take, Hideaki Tadano, Masaki Sakuma | 1999-03-30 |