Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12347457 | Cartridge including magnetic tape including magnetic layer including protrusions on surface thereof | Minoru Yamaga | 2025-07-01 |
| 12068005 | Tape reel and tape cartridge | Hiroshi Kumagai, Taeko Takahashi | 2024-08-20 |
| 11282542 | Tape cartridge with reel lock release member having gradually decreasing thickness extension portions | Hiroshi Kumagai, Chisato Akasaka | 2022-03-22 |
| 11217278 | Tape cartridge including reel lock member | Takeshi Saito, Hiroshi Kumagai | 2022-01-04 |
| 9704530 | Magnetic tape cartridge | Hiroshi Kumagai | 2017-07-11 |
| 5506739 | Tape cassette with slidably guided, spring-biased reel locking means | — | 1996-04-09 |
| 5422773 | Lid assembly for a tape cassette which protects front and rear surfaces of a magnetic tape | Hiroshi Ozaki | 1995-06-06 |
| 5407145 | Tape cassette having an improved lid/sub lid structure | — | 1995-04-18 |
| 5405007 | Tape cassette case made by a dichromatic manner | — | 1995-04-11 |
| 5255144 | Brake device for tape reel in magnetic tape cassette | Kiyoshi Urayama, Toshihiro Watanabe, Shinya Sato, Masanori Tanaka | 1993-10-19 |
| 5174520 | Tape cassette reel having an upper reel portion formed by dichromatic molding method | — | 1992-12-29 |
| 5170962 | Tape cassette with lid assembly which, in a closed position, protects front and rear surfaces of a tape run extending across a recess at the front of the cassette | Masanori Abe | 1992-12-15 |
| 5075810 | Tape cassette with sealed light aperture | — | 1991-12-24 |
| 5007596 | Tape cassette reel having an upper reel molded by dichromatic molding process | — | 1991-04-16 |
| 4945440 | Tape cassette with transparent reel viewing windows and laminated three-color construction | Kiyoshi Urayama, Shinya Sato | 1990-07-31 |
| 4903915 | Tape cassette having means for locking reels thereof | — | 1990-02-27 |
| 4901171 | Optical tape end sensing arrangement for magnetic tape cassette | Kiyoshi Urayama, Shinya Sato | 1990-02-13 |
| 4893766 | Tape cassette having a front lid and a back lid | Shuichi Yamashina, Minoru Yahagi | 1990-01-16 |
| 4807826 | Tape reel for tape cassette | — | 1989-02-28 |
| 4773614 | Tape cassette | Masahiro Makino | 1988-09-27 |