Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9016083 | Air refrigerant type freezing and heating apparatus | Seiichi Okuda | 2015-04-28 |
| 8141380 | Air refrigerant type cooling apparatus and air refrigerant cooling/heating system using refrigerant type cooling apparatus | Seiichi Okuda | 2012-03-27 |
| 7322207 | Air refrigerant cooling apparatus and air refrigeration system using the air refigerant cooling apparatus | Hiroshi Igawa, Seiichi Okuda | 2008-01-29 |