Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10738371 | As-rolled type K55 electric resistance welded oil well pipe and hot-rolled steel sheet | Tetsuo Ishitsuka, Takashi TSUSUE, Shuji Iwamoto, Toshiyuki Ogata, Osamu Yoshida +1 more | 2020-08-11 |
| 10640843 | High strength electric resistance welded steel pipe and method for producing high strength electric resistance welded steel pipe | Tetsuo Ishitsuka, Shuji Iwamoto, Takashi TSUSUE, Osamu Yoshida, Hideto Kawano | 2020-05-05 |
| 9479708 | Image processing device, image processing method, and image processing program | Isao Yamada, Tsutomu Okuno | 2016-10-25 |
| 5475303 | Electronic watthour meter | — | 1995-12-12 |
| 5414349 | Electronic watthour meter | — | 1995-05-09 |
| 4486706 | Power flow direction detector | — | 1984-12-04 |
| 4475081 | Electronic watthour meter | — | 1984-10-02 |
| 4463311 | Electronic electric-energy meter | — | 1984-07-31 |