Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D291726 | Grid-like guard for the front of a portable heater | Nobuyuki Kojima, Makoto Kobiyama | 1987-09-01 |
| 4653464 | Portable heating unit | Nobuyuki Kojima, Makoto Kobiyama | 1987-03-31 |
| D287752 | Heating chamber for a portable heater | Nobuyuki Kojima, Makoto Kobiyama | 1987-01-13 |
| D285335 | Oilstove | Nobuyuki Kojima, Makoto Kobiyama | 1986-08-26 |
| D283727 | Oilstove | Nobuyuki Kojima, Makoto Kobiyama | 1986-05-06 |
| D282100 | Oilstove | Kazuhiro Tanaka, Shigeki Yamaguchi | 1986-01-07 |
| D281998 | Oilstove | Kazunori Amano | 1985-12-31 |
| D278272 | Oilstove | Nobuyuki Kojima | 1985-04-02 |
| D277697 | Oilstove | Nobuyuki Kojima, Kazunori Amano | 1985-02-19 |
| 4488536 | Warm air blowing heater | Nobuyuki Kojima | 1984-12-18 |