Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11413485 | Sprinkler head | Yutaka Tateishi, Masashi Murakami, Yuki Iizawa | 2022-08-16 |
| 11311759 | Sprinkler head | Yutaka Tateishi, Yuki Iizawa, Masashi Murakami | 2022-04-26 |
| D699321 | Sprinkler head | Yukinori Karihara | 2014-02-11 |
| 4826239 | T-bar roof | Kazuhiro Nishikawa, Masuo Shimomura | 1989-05-02 |