Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6909590 | High voltage capacitor and magnetron | Tsukasa Sato, Isao Fujiwara, Makoto Morita | 2005-06-21 |
| RE34927 | Magnetic tape cassette with tape protective closure and lock mechanism | Hiroshi Meguro, Yoshinori Yamamoto, Masao Ohyama, Shigeru Mizusawa, Kenji Kawakami | 1995-05-02 |
| 4881137 | Magnetic tape cassette with tape protective closure and lock mechanism | Hiroshi Meguro, Yoshinori Yamamoto, Masao Ohyama, Shigeru Mizusawa, Kenji Kawakami | 1989-11-14 |
| 4843510 | Magnetic tape cassette with tape protective closure and lock mechanism | Hiroshi Meguro, Yoshinori Yamamoto, Masao Ohyama, Shigeru Mizusawa, Kenji Kawakami | 1989-06-27 |
| 4816953 | Tape cassette with groove engageable with loading hook | Masao Ohyama, Yoshinori Yamamoto, Kenji Kawakami | 1989-03-28 |
| 4694360 | Tape cassette with concave engagement portion and player with hook engageable therewith | Masao Ohyama, Yoshinori Yamamoto, Kenji Kawakami | 1987-09-15 |
| 4644433 | Magnetic tape cassette having integrated optical elements | Yoshinori Yamamoto, Kenji Kawakami | 1987-02-17 |
| 4572461 | Magnetic tape cassette | Yoshinori Yamamoto, Kenji Kawakami | 1986-02-25 |