Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5597502 | Single phase/three phase heater element circuit for a ceramic fiber heater | Toru Watanabe | 1997-01-28 |
| 5401937 | Sheathed heater | — | 1995-03-28 |
| 5198641 | Sheathed heater | Akira Takanaka, Akira Sogabe | 1993-03-30 |