Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6177209 | Battery protector having a positive temperature coefficient element | — | 2001-01-23 |
| 6060185 | Protective device for secondary batteries | — | 2000-05-09 |
| 6001497 | Overcharge preventing device | — | 1999-12-14 |
| 5853908 | Protective device for secondary batteries | — | 1998-12-29 |
| 5458766 | Life indicator and cartridge for indicating total water flow | Katuo Ehara, Aya Nishino, Shigeru Sano | 1995-10-17 |