Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10907857 | Dew-condensation preventing square duct | — | 2021-02-02 |
| 10317000 | Duct flange structure, and manufacturing method for the same | Naoki Hashimoto, Tomotsugu NOGUCHI, Takaaki Uchikawa | 2019-06-11 |
| 9869417 | Pipe coupling structure | Takaaki Uchikawa | 2018-01-16 |
| 6957670 | Duct unit for air-conditioner | — | 2005-10-25 |