Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4720203 | Push-button type mechanical pencil | — | 1988-01-19 |
| 4344308 | Method for cold rolling and cleaning steel plates | Sakae Sonoda, Kimio Yokoyama | 1982-08-17 |
| 4317845 | One side surface molten metallic coating method and apparatus thereof | Kunihiko Karasawa, Tokushiro Hosoda, Hiroshi Mase, Yasuo Sato | 1982-03-02 |
| 4290337 | Fastener set | Takeo Kuwata, Mikio Usa | 1981-09-22 |
| 4246865 | One side surface molten metallic coating apparatus | Yasunobu Matsushima, Yokichi Sato, Kuniharu Matsumoto, Kazuyuki Akeyoshi, Takayuki Tobita | 1981-01-27 |
| 4210469 | Process of annealing for preventing temper colors on a steel sheet | Kazuhiko Yoshinari, Hidefumi Koyakumaru | 1980-07-01 |