Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7299658 | Quartz glass crucible for the pulling up of silicon single crystal | Yasuo Ohama, Takayuki Togawa | 2007-11-27 |
| 6886364 | Method for producing quartz glass crucible | Yasuo Ohama | 2005-05-03 |
| 6797061 | Quartz glass crucible for pulling up silicon single crystal and production method therefor | Tatsuhiro Sato, Yasuo Ohama | 2004-09-28 |
| 6136092 | Quart crucible with large diameter for pulling single crystal and method of producing the same | Tatsuhiro Sato, Mitsuo Matsumura, Hiroyuki Watanabe | 2000-10-24 |
| 5989021 | Quartz crucible with large diameter for pulling single crystal and method of producing the same | Tatsuhiro Sato, Mitsuo Matsumura, Hiroyuki Watanabe | 1999-11-23 |
| 4930778 | Racket frame | — | 1990-06-05 |
| 4913223 | Apparatus for defreezing frozen foods | Yuji Wakatuki, Nobuya Suzuki | 1990-04-03 |
| 4870933 | Fuel control system for an automotive engine | — | 1989-10-03 |
| 4768394 | Steering wheel device | Kazuhisa Kubota, Takafumi Ichikawa | 1988-09-06 |
| 4742727 | Steering wheel device | Kazuhisa Kubota, Takafumi Ichikawa | 1988-05-10 |
| 4674352 | Steering wheel device | Kazuhisa Kubota, Takafumi Ichikawa | 1987-06-23 |
| D288121 | Ventilator for container | Masaki Takahashi | 1987-02-03 |
| D286908 | Ventilator for containers | Masaki Takahashi | 1986-11-25 |
| 4546933 | Webbing retractor | Shigeyasu Kanada, Yoshio Nakano, Yuji Nishimura | 1985-10-15 |
| 4547636 | Slidable contact assembly | Kazuhisa Kubota, Takahumi Ichikawa | 1985-10-15 |
| 4529143 | Webbing retractor | Shigeyasu Kanada, Yoshio Nakano | 1985-07-16 |
| 4393360 | Electrical switch structure | Kaneyasu Arakawa | 1983-07-12 |
| 4376896 | Switching assembly | Nobuhiro Takeda, Yukio Takaishi, Masaichi Hattori | 1983-03-15 |
| 4370638 | Double-function solenoid operated switch | Nobuhiro Takeda, Masaichi Hattori, Yukio Takaishi | 1983-01-25 |
| 4284295 | Webbing hanging device | Nobuhiro Takeda, Masaichi Hattori | 1981-08-18 |
| 4264885 | Electromagnetic relay | Shigeo Hara, Kaneyasu Arakawa, Minoru Kondo | 1981-04-28 |
| 4262270 | Electromagnetic relay switch assembly | Nobuhiro Takeda, Masaichi Hattori | 1981-04-14 |