Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6931204 | Vacuum heat insulator, hot insulating device using vacuum heat insulator, and electric water heater | Takayuki Urata, Mitsuhiro Sano, Akihiro Umeda, Izuo Hirota | 2005-08-16 |