Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5216570 | Suspension-type line arrester | Tsuruo Yorozuya, Takashi Irie, Takashi Ohashi | 1993-06-01 |
| 4761707 | Lightning-conducting insulators | Tetsuya Nakayama, Jun Atsumi | 1988-08-02 |