Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4571721 | Composite concentration system | Tadahiko Yasui, Akira Horiki, Hajime Yamada, Takashi Usami | 1986-02-18 |
SI
Shizuo Ito
Hitachi: 1 patents #17,742 of 28,497Top 65%
Nippon Electric Co.: 1 patents #251 of 792Top 35%
Nippon Telegraph And Telephone Public: 1 patents #297 of 842Top 40%
Oki Electric Industry Co.: 1 patents #1,459 of 2,807Top 55%
Overall (All Time): #3,990,839 of 4,157,543Top 100%
1
Patents All Time