Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D937223 | Terminal block | Tadahiko Ogawa | 2021-11-30 |
| D926704 | Terminal block | Tadahiko Ogawa | 2021-08-03 |
| D923586 | Terminal block | Tadahiko Ogawa, Takashi Sakaguchi, Yuki Kuniyasu | 2021-06-29 |
| D910577 | Terminal block | Tadahiko Ogawa | 2021-02-16 |