Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12232580 | Slide fastener and method of producing waterproof chain | Toshimasa Konaka, Takayuki Ogyu | 2025-02-25 |
| 12201195 | Slide fastener and method of producing waterproof chain | Toshimasa Konaka, Takayuki Ogyu | 2025-01-21 |