Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11285522 | Heat transfer tube, heat exchanger, and method for manufacturing heat transfer tube | Yusuke Nakaura, Hideo Kume, Takuya Okawa | 2022-03-29 |
| 11052443 | Method of producing inner spiral grooved tube and apparatus for producing inner spiral grooved tube | Yusuke Nakaura | 2021-07-06 |
| 10933456 | Production method and production device for tube with spirally grooved inner surface | Yusuke Nakaura, Takeshi Sakagami | 2021-03-02 |
| 10232421 | Method of producing inner spiral grooved tube and apparatus for producing inner spiral grooved tube | Yusuke Nakaura | 2019-03-19 |
| 9833825 | Production method and production device for tube with spirally grooved inner surface | Yusuke Nakaura, Takeshi Sakagami | 2017-12-05 |