Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D291726 | Grid-like guard for the front of a portable heater | Nobuyuki Kojima, Youichi Sekigawa | 1987-09-01 |
| 4653464 | Portable heating unit | Nobuyuki Kojima, Youichi Sekigawa | 1987-03-31 |
| D287752 | Heating chamber for a portable heater | Nobuyuki Kojima, Youichi Sekigawa | 1987-01-13 |
| D285335 | Oilstove | Nobuyuki Kojima, Youichi Sekigawa | 1986-08-26 |
| D283727 | Oilstove | Nobuyuki Kojima, Youichi Sekigawa | 1986-05-06 |