Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10488040 | Duct wall surface structure | Kiyonori Kushioka, Masashi Kiyosawa | 2019-11-26 |
| 10323844 | Exhaust duct and boiler | Kiyonori Kushioka, Shimpei Todaka, Masashi Kiyosawa, Hideo Miyanishi, Hiroshi Kako | 2019-06-18 |
| 10190771 | Exhaust duct and boiler | Shimpei Todaka, Kiyonori Kushioka, Masashi Kiyosawa | 2019-01-29 |