Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11007777 | Printer | Masaaki Takagi | 2021-05-18 |
| 11002462 | Heat-exchanging ventilation device, method for attaching heat exchanger, and method for detaching heat exchanger | Keishi Tsuda, Masaru Takada, Ippei Momose | 2021-05-11 |