Issued Patents All Time
Showing 25 most recent of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8257783 | Magnetic disk and method of manufacturing the same | Kota Suzuki | 2012-09-04 |
| 7833641 | Magnetic disk | Koichi Shimokawa | 2010-11-16 |
| 7420886 | Magnetic recording medium, and thermal stability measuring method and apparatus of magnetic recording medium | Teiichiro Umezawa, Genshichi Hata, Takashi Morikawa, Masato Kobayashi, Masashi Suzuki +2 more | 2008-09-02 |
| 7220500 | Magnetic recording medium, and thermal stability measuring method and apparatus of magnetic recording medium | Teiichiro Umezawa, Genshichi Hata, Takashi Morikawa, Masato Kobayashi, Masashi Suzuki +2 more | 2007-05-22 |
| 7220446 | Management technique of friction coefficient based on surface roughness, substrate for information recording medium, information recording medium and manufacture method thereof | Tomotaka Yokoyama, Masatomo Shibui, Nobuyuki Eto | 2007-05-22 |
| 7208236 | Magnetic recording medium with multi-portion carbon-based protection layer, and apparatus thereof | Takashi Morikawa, Teiichiro Umezawa, Masafumi Ishiyama | 2007-04-24 |
| 6946191 | Magnetic recording medium | Takashi Morikawa, Teiichiro Umezawa, Masafumi Ishiyama | 2005-09-20 |
| 6916558 | Magnetic disk using a glass substrate | Teiichiro Umezawa, Keiji Moroishi | 2005-07-12 |
| 6852010 | Substrate for an information recording medium, information recording medium using the substrate, and method of producing the substrate | Kouji Takahashi, Takemi Miyamoto, Genshichi Hata, Tomotaka Yokoyama | 2005-02-08 |
| 6790509 | Substrate for information recording medium, information recording medium, and method for controlling surface of substrate for information recording medium | Tomotaka Yokoyama, Takemi Miyamoto, Kouji Takahashi | 2004-09-14 |
| 6759138 | Antiferromagnetically coupled magnetic recording medium with dual-layered upper magnetic layer | Keiji Moroishi, Teiichiro Umezawa, Kenji Ayama | 2004-07-06 |
| 6706427 | Management technique of friction coefficient based on surface roughness, substrate for information recording medium, information recording medium and manufacture method thereof | Tomotaka Yokoyama, Masatomo Shibui, Nobuyuki Eto | 2004-03-16 |
| 6670055 | Magnetic recording medium and manufacturing method therefor | Junichi Horikawa, Teiichiro Umezawa, Kenji Ayama, Tomotaka Yokoyama | 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, Genshichi Hata, Tomotaka Yokoyama | 2003-03-25 |
| 5966273 | Magnetoresistive thin film head | Hidetoshi Matsumoto | 1999-10-12 |
| 5723260 | Unsaturated group-containing urethane compound, photopolymerizable composition containing it, and photosensitive lithographic printing plate | Shigeo Tsuji | 1998-03-03 |
| 5677101 | Light-sensitive lithographic printing plate having a light sensitive layer comprising a clathrate compound | Kazuo Noguchi, Kaori Fukumuro, Shinichi Matsubara, Yoshihiro Koya, Shigeru Kajiwara | 1997-10-14 |
| 5678167 | Method for dissolving nuclear fuels | Yukio Wada, Kyoichi Morimoto, Takayuki Goibuchi | 1997-10-14 |
| 5585043 | Method of coextracting neptunium and plutonium | Yukio Wada, Kyoichi Morimoto, Takayuki Goibuchi | 1996-12-17 |
| 5513056 | Magnetic head slider | Mikio Kawasaki, Takahiro Ohmori | 1996-04-30 |
| 5500192 | Method of separating neptunium and plutonium | Yukio Wada, Kyoichi Morimoto, Takayuki Goibuchi | 1996-03-19 |
| 5260167 | Light-sensitive litho printing plate requiring no dampening water | Nobumasa Sasa, Kimi Ojima, Tetsuya Taniguchi, Akeo Kasakura | 1993-11-09 |
| 5238771 | Lithographic printing plate utilizing aluminum substrate with photosensitive layer containing o-naphthoquinonediazide sulfonic acid ester, alkali soluble resin and select additive | Kiyoshi Goto, Hideyuki Nakai, Yoshiko Kobayashi | 1993-08-24 |
| 5225309 | Light-sensitive litho printing plate with cured diazo primer layer, diazo resin/salt light-sensitive layer containing a coupler and silicone rubber overlayer | Norihito Suzuki, Kiyoshi Goto, Kazuo Noguchi, Akeo Kasakura | 1993-07-06 |
| 5219700 | Photosensitive composition containing 1,2-naphthoquinone-2-diazido-4-sulfonic acid ester, alkali-soluble resin, halomethyloxadiazole compound and a dye | Hideyuki Nakai, Kiyoshi Goto, Yoshiko Fujita | 1993-06-15 |