Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5054754 | Inversion spring for thermal overload relay and method for making the same | Nobuhiro Sekine, Tadashi Matsuoka, Tsutomu Oyama | 1991-10-08 |
| 5046227 | Method for making an inversion spring for thermal overload relay | Nobuhiro Sekine, Tadashi Matsuoka, Tsutomu Oyama | 1991-09-10 |
| 4908594 | Thermal overload relay | Haruo Ichikawa | 1990-03-13 |
| 4670728 | Thermal type overload relay | Haruo Ichikawa, Kanichi Izumi, Tadayoshi Onodera | 1987-06-02 |
| 4642598 | Adjusting device for thermal overload relay | Haruo Ichikawa, Fumio Chida, Kanichi Izumi | 1987-02-10 |