Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4315206 | Current supply circuit for telephone exchange | Michio Tokunaga, Hideo Mizutani, Koichi Hasegawa, Takaaki Osaki | 1982-02-09 |
RO
Ryoichi Okada
Hitachi: 1 patents #311 of 1,214Top 30%
Nippon Electric Co.: 1 patents #15 of 179Top 9%
Nippon Telegraph And Telephone Public: 1 patents #36 of 171Top 25%
Oki Electric Industry Co.: 1 patents #8 of 33Top 25%
Overall (1982): #32,345 of 81,411Top 40%
1
Patents 1982