Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5697573 | Apparatus for stably transferring belt-like material | Junichi Fukuchi, Junji Ueno, Hisaki Tsumori | 1997-12-16 |
| 5036510 | Optical recording disk | Ryutaro Hayashi, Yukio Kimura | 1991-07-30 |
| 4972404 | Optical disc | Tadahiro Yamaguchi | 1990-11-20 |
| 4853260 | Optical disk and process for producing the same | Yukio Kimura, Ryutaro Hayashi | 1989-08-01 |
| 4847827 | Optical information recording disk | Ryutaro Hayashi, Yukio Kimura | 1989-07-11 |
| 4791044 | Disk type information recording medium | — | 1988-12-13 |
| 4404315 | Molding compositions and diaphragms, arm pipes and head shells molded therefrom | Tsunehiro Tsukagoshi, Etsuro Nemoto, Shinichi Yokozseki, Sumio Hagiwara, Yasuyuki Arai +1 more | 1983-09-13 |
| 4366205 | Tone-arm elements | Tsunehiro Tsukagoshi, Shinichi Yokozeki, Sumio Hagiwara, Masataka Uchidoi, Yasuyuki Arai | 1982-12-28 |
| 4362772 | Vibratory elements for audio equipment | Tsunehiro Tsukagoshi, Shinichi Yokozeki, Sumio Hagiwara, Masataka Uchidoi, Yasuyuki Arai | 1982-12-07 |
| 4352407 | Diaphragms for acoustic instruments and method of producing the same | Tsunehiro Tsukagoshi, Shinichi Yokozeki, Yasuyuki Arai | 1982-10-05 |
| 4343376 | Vibratory elements for audio equipment | Tsunehiro Tsukagoshi, Shinichi Yokozeki, Sumio Hagiwara, Masataka Uchidoi, Yasuyuki Arai | 1982-08-10 |
| 4341838 | Molding compositions and diaphragms, arm pipes and head shells molded therefrom | Kunio Imai, Tsunehiro Tsukagoshi, Shinichi Yokozeki, Yasuyuki Arai | 1982-07-27 |
| 4269416 | Head shell for record player tonearms | Yasuyuki Arai, Tsunehiro Tsukagoshi, Shinichi Yokozeki | 1981-05-26 |
| 4261580 | Arm pipe for record player tonearms | Tsunehiro Tsukagoshi, Shinichi Yokozeki, Yasuyuki Arai | 1981-04-14 |
| 4221773 | Method of producing a carbon diaphragm for an acoustic instrument | Tsunehiro Tsukagoshi, Teruo Toma, Shinichi Yokozeki | 1980-09-09 |
| 4196022 | Surface hardening method | Teruo Tohma, Tsunehiro Tsukagoshi | 1980-04-01 |