Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5374379 | PTC composition and manufacturing method therefor | Norio Tsubokawa | 1994-12-20 |
| 5358793 | PTC device | Toshiyuki Hanada, Mayumi Takata, Isao Morooka, Kazuhiko Harazaki | 1994-10-25 |