Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5456961 | High density optical disk | Tetsuya Iida | 1995-10-10 |
| 5216219 | Disk manufacturing apparatus | Teruo Toma | 1993-06-01 |
| 5185730 | Method for reading data from optical disk | Toshihiro Komaki, Hideo Kudo, Tomonori Ishizuki | 1993-02-09 |
| 5171392 | Method of producing an optical information record carrier | Tetsuya Iida, Takanobu Higuchi, Kunizo Ogoshi | 1992-12-15 |
| 5126996 | Optical information record carrier and the method of producing the same | Tetsuya Iida, Takanobu Higuchi, Kunizo Ogoshi | 1992-06-30 |
| 5025439 | Method for recording and reproducing of information on an optical disk of a phase-change type | Toshihiro Komaki, Hideo Kudo, Tomonori Ishizuki | 1991-06-18 |
| 4518443 | Acoustic diaphragm | Masami Kimura, Tsunehiro Tsukagoshi | 1985-05-21 |
| 4395814 | Acoustic vibrating element of graphite and method of manufacturing same | Tsunehiro Tsukagoshi, Teruo Tohma | 1983-08-02 |
| 4366205 | Tone-arm elements | Tsunehiro Tsukagoshi, Sumio Hagiwara, Masataka Uchidoi, Toshikazu Yoshino, Yasuyuki Arai | 1982-12-28 |
| 4362772 | Vibratory elements for audio equipment | Tsunehiro Tsukagoshi, Sumio Hagiwara, Masataka Uchidoi, Toshikazu Yoshino, Yasuyuki Arai | 1982-12-07 |
| 4352407 | Diaphragms for acoustic instruments and method of producing the same | Tsunehiro Tsukagoshi, Toshikazu Yoshino, Yasuyuki Arai | 1982-10-05 |
| 4343376 | Vibratory elements for audio equipment | Tsunehiro Tsukagoshi, Sumio Hagiwara, Masataka Uchidoi, Toshikazu Yoshino, Yasuyuki Arai | 1982-08-10 |
| 4341838 | Molding compositions and diaphragms, arm pipes and head shells molded therefrom | Kunio Imai, Tsunehiro Tsukagoshi, Toshikazu Yoshino, Yasuyuki Arai | 1982-07-27 |
| 4269416 | Head shell for record player tonearms | Toshikazu Yoshino, Yasuyuki Arai, Tsunehiro Tsukagoshi | 1981-05-26 |
| 4261580 | Arm pipe for record player tonearms | Tsunehiro Tsukagoshi, Toshikazu Yoshino, Yasuyuki Arai | 1981-04-14 |
| 4221773 | Method of producing a carbon diaphragm for an acoustic instrument | Tsunehiro Tsukagoshi, Teruo Toma, Toshikazu Yoshino | 1980-09-09 |