Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4761044 | Frame structure for housing panel plates | Toyohiko Akama, Osamu Igarashi | 1988-08-02 |
| 4278442 | Method for reducing caking property of coal | Minoru Matsuda, Hirotsugu IWASAKI, Yasukatsu Tamai, Hiroshi Fukutome | 1981-07-14 |