Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7757534 | Press die, burring machining method, method of manufacturing pressed product, and pressed product | Hideaki Shiga | 2010-07-20 |
| 7014136 | Magnetic tape cassette | Kazuo Hiraguchi, Katsuki Asano | 2006-03-21 |
| 6913723 | Process of making a guide roller for a magnetic tape cassette | Katsuki Asano, Shigeru Nishiyama | 2005-07-05 |
| 6855285 | Magnetic tape cassette | Teruo Ashikawa, Hiroyuki Naito, Kiyoo Morita, Shozo Onmori, Katsuki Asano | 2005-02-15 |
| 6804084 | Magnetic tape cassette having reduced friction against tape reels | Teruo Ashikawa, Hiroyuki Naito, Kiyoo Morita, Shozo Onmori, Katsuki Asano | 2004-10-12 |
| 6742739 | Magnetic tape cassette, guide roller, and a method of manufacturing a guide roller | Katsuki Asano, Shigeru Nishiyama | 2004-06-01 |
| 6643096 | Magnetic tape cassette having improved positioning | Teruo Ashikawa, Hiroyuki Naito, Kiyoo Morita, Shozo Onmori, Katsuki Asano | 2003-11-04 |
| 6595450 | Magnetic tape cassette, guide roller, and a method of manufacturing a guide roller | Katsuki Asano, Shigeru Nishiyama | 2003-07-22 |
| 5318739 | Method for manufacturing magnetic tape cassette | Shingo Katagiri | 1994-06-07 |
| 5049337 | Molding method for magnetic tape cassette | Shingo Katagiri | 1991-09-17 |
| 4700254 | Magnetic tape cassette | Kengo Oishi | 1987-10-13 |
| 4695912 | Dustproof liner for a magnetic disc cartridge | — | 1987-09-22 |
| 4635877 | Magnetic tape cassette | Kengo Oishi | 1987-01-13 |
| 4570877 | Magnetic tape cassette | Kengo Oishi | 1986-02-18 |
| 4544975 | Pad assembly for tape cassette | Kengo Oishi | 1985-10-01 |
| 4427166 | Magnetic tape cassette | Kengo Oishi, Choji Komiyama | 1984-01-24 |
| 4389010 | Magnetic tape guide means | Kengo Oishi, Osamu Suzuki, Kouji Kamiyama | 1983-06-21 |