Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9311648 | Advertisement server device, advertisement display method, and advertisement server program | Shingo Mitsui, Kanetsune Yoshida | 2016-04-12 |
| 7027385 | Optical disk, disk substrate, and drive | Katsusuke Shimazaki, Yuuji Yamazaki, Tsuyoshi Maro, Kenji Ohta, Hiroyoshi Takagi +1 more | 2006-04-11 |
| 6874157 | Disk case | Hirofumi Taguchi, Kenji Ogiro, Kyuichiro Nagai, Shyunji Furukawa, Minoru Fujita | 2005-03-29 |
| 6739537 | Single-reel tape cartridge with leader locking mechanism | Nobutaka Miyazaki, Teruo Sogabe | 2004-05-25 |
| 6687216 | Cartridge in which disk is stored | Hiroshi Nakashima, Noriaki Kitani, Takao Enomoto, Hiroyoshi Takagi, Kenji Ohta +1 more | 2004-02-03 |
| 6431353 | Disc cartridge envelope | — | 2002-08-13 |
| D435854 | Disc cartridge | Hiroyoshi Takagi, Kenji Ohta, Noriaki Kitani, Takao Enomoto, Hiroshi Nakashima +2 more | 2001-01-02 |
| 6061213 | Magnetic tape cartridge having triple lid assembly | Mikihisa Inoue, Kenmei Masuda, Hidekazu Takeda | 2000-05-09 |
| 5946290 | Tamper-proof lid lock in disc cartridge | Kenji Ohta | 1999-08-31 |
| 5926454 | Disc cartridge with slide shutter having catch pieces | Kenji Ohta | 1999-07-20 |
| 5910941 | Disc cartridge lid structure | — | 1999-06-08 |
| 5903541 | Disc cartridge lid structure | Kenji Ohta | 1999-05-11 |
| 5893527 | Single-reel tape cartridge | Takashi Sumida, Nobutaka Miyazaki | 1999-04-13 |
| 5687047 | Magnetic tape cartridge having triple lid assembly | Mikihisa Inoue, Kenmei Masuda, Hidekazu Takeda | 1997-11-11 |
| 5602695 | Cassette loading mechanism for recording and playback apparatus | Tatsumi Nishijima, Hidekazu Takeda, Kenmei Masuda, Yoshimi Maehara | 1997-02-11 |
| 5556051 | Tape cartridge having a front lid with a covering wall | Yoshimi Maehara, Tatsumi Nishijima, Hidekazu Takeda, Kenji Ogiro, Nobuyuki Kaku | 1996-09-17 |
| 5537279 | Tape cassette and magnetic recording/reproducing device | Hidekazu Takeda, Nobuyuki Kaku, Tomochika Yamashita, Yoshimi Maehara, Mikihisa Inoue | 1996-07-16 |
| 5503348 | Opening and closing of a front lid of a tape cartridge | Yoshimi Maehara, Hidekazu Takeda, Kenji Ogiro, Nobuyuki Kaku | 1996-04-02 |
| 5497279 | Tape cartridge and recording reproduction apparatus for the tape cartridge | Tatsumi Nishijima, Hidekazu Takeda, Kenmei Masuda, Yoshimi Maehara, Kenji Ogiro | 1996-03-05 |
| 5479312 | Tape cartridge system implementing variable sized tape cartridges designed for use on the same recording/reproducing apparatus | Kenmei Masuda, Hidekazu Takeda, Tatsumi Nishijima, Yoshimi Maehara | 1995-12-26 |
| 5454527 | Tape cartridge | Yoshimi Maehara, Nobuyuki Kaku, Hidekazu Takeda, Kenji Ogiro | 1995-10-03 |
| 4933797 | Arrangement for preventing entrance of harmful particles for use in a cartridge | Kunio Wakai, Hideo Fujiwara, Hideaki Niimi, Noboru Isoe, Toshio Doi | 1990-06-12 |
| 4881696 | Mechanism for preventing loosening of tape in a tape cartridge | Yoshimi Maehara | 1989-11-21 |
| 4875640 | Tape cartidge | — | 1989-10-24 |
| 4741496 | Tape cartridge | Hiroyoshi Takagi, Toshiyuki Amaike, Harutaka Hayashi | 1988-05-03 |