Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7384723 | Optical information recording medium | Toshio Ishida, Takako Ozawa | 2008-06-10 |
| 7341820 | Optical information recording medium | Toshio Ishida, Shinji Saito | 2008-03-11 |
| 7319350 | Lock-detection circuit and PLL circuit using same | — | 2008-01-15 |
| 7129019 | Optical information recording medium | Shinji Saito, Toshio Ishida, Takako Ozawa, Hiroaki Doushita | 2006-10-31 |
| 7103897 | Optical information recording medium | Toshio Ishida | 2006-09-05 |
| 7078084 | Optical information recording medium transparent sheet, process for producing the same, and optical information recording medium | — | 2006-07-18 |
| 7051348 | Optical information recording medium including a substrate, a recording layer, a layer of acrylic adhesive, and a cover layer | Toshio Ishida, Shinji Saito | 2006-05-23 |
| 6989069 | Method for producing an optical information recording medium | Takako Ozawa, Toshio Ishida, Akira Mizuta | 2006-01-24 |
| 6967048 | Optical recording medium | Shinji Saito, Toshio Ishida | 2005-11-22 |
| 6924018 | Optical information recording medium | Takako Ozawa, Toshio Ishida | 2005-08-02 |
| 6869656 | Optical information recording medium | Toshio Ishida, Shinji Saito | 2005-03-22 |
| 6815030 | Optical information recording medium | Toshio Ishida, Shinichi Kato | 2004-11-09 |
| 6699591 | Optical information recording medium | Toshio Ishida | 2004-03-02 |
| 6661770 | Optical information recording medium | Shinji Saito, Toshio Ishida | 2003-12-09 |
| 6576322 | Magnetic disk | Shinji Saito | 2003-06-10 |
| 6037051 | Magnetic tape | Hiroaki Doushita, Hiroaki Araki | 2000-03-14 |
| 5547772 | Magnetic recording medium | Shinji Saito, Hiroshi Ogawa, Hitoshi Noguchi | 1996-08-20 |
| 5479311 | Magnetic tape cassette having improved magnetic tape substrate and tape guide for reducing electrostatic charging | Hiroaki Doushita, Yasutoshi Okuzawa, Tadashi Ishiguro, Kazuo Kato | 1995-12-26 |
| 5436055 | Magnetic recording medium and magnetic tape cassette mounted with the magnetic recording medium | Shinji Saito, Kazuo Kato, Noburo Hibino | 1995-07-25 |
| 5415933 | Magnetic recording medium containing a biaxially oriented multilayer support | Tadashi Ishiguro, Kazuo Kato, Noburo Hibino | 1995-05-16 |
| 5126202 | Magnetic recording medium containing ferro magnetic powder, polar group containing resins in a specific ratio and carbon black of a specific size range | Hiroo Inaba, Koichi Yamauchi, Akihiro Matsufuji | 1992-06-30 |
| 5112680 | Magnetic recording medium | Hiroo Inaba, Koichi Yamauchi, Akihiro Matsufuji | 1992-05-12 |
| 4997696 | Magnetic recording medium | Ko Kamada, Noburo Hibino | 1991-03-05 |
| 4859500 | Method for preparing a magnetic recording medium | Takahito Miyoshi | 1989-08-22 |
| 4687705 | Magnetic recording medium | Hajime Miyatsuka, Akira Kasuga, Akihiro Matsufuji | 1987-08-18 |