Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10132494 | Heat transfer tube including a groove portion having a spiral shape extending continuously and a rib portion extending continuously and protruding inward by the groove portion | Hiroyuki Nakaharai, Yuichi Kanemaki, Yoshinori Yamasaki | 2018-11-20 |
| 9869469 | Combustion burner and boiler including the same | Keigo Matsumoto, Koutaro Fujimura, Toshimitsu Ichinose, Naofumi Abe, Jun Kasai | 2018-01-16 |