Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8640497 | Method of manufacturing glass substrate for magnetic disk and system for manufacturing glass substrate for magnetic disk | Ryuuichi Kashima, Hideki Isono, Shinji Eda, Tadashi Tomonaga, Kraisorn Phandon +1 more | 2014-02-04 |
| 8567044 | Method of manufacturing a magnetic disk | Hiroshi Takeda, Ken-ichi Nishimori, Tadashi Tomonaga | 2013-10-29 |
| 8033008 | Method for supporting manufacture of a magnetic disk | Hiroshi Takeda, Ken-ichi Nishimori, Tadashi Tomonaga | 2011-10-11 |
| 7220446 | Management technique of friction coefficient based on surface roughness, substrate for information recording medium, information recording medium and manufacture method thereof | Hiroshi Tomiyasu, Masatomo Shibui, Nobuyuki Eto | 2007-05-22 |
| 6852010 | Substrate for an information recording medium, information recording medium using the substrate, and method of producing the substrate | Kouji Takahashi, Takemi Miyamoto, Hiroshi Tomiyasu, Genshichi Hata | 2005-02-08 |
| 6790509 | Substrate for information recording medium, information recording medium, and method for controlling surface of substrate for information recording medium | Takemi Miyamoto, Hiroshi Tomiyasu, Kouji Takahashi | 2004-09-14 |
| 6706427 | Management technique of friction coefficient based on surface roughness, substrate for information recording medium, information recording medium and manufacture method thereof | Hiroshi Tomiyasu, Masatomo Shibui, Nobuyuki Eto | 2004-03-16 |
| 6670055 | Magnetic recording medium and manufacturing method therefor | Hiroshi Tomiyasu, Junichi Horikawa, Teiichiro Umezawa, Kenji Ayama | 2003-12-30 |
| 6537648 | Substrate for an information recording medium, information recording medium using the substrate and method of producing the substrate | Kouji Takahashi, Takemi Miyamoto, Hiroshi Tomiyasu, Genshichi Hata | 2003-03-25 |