Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12417873 | Welding transformer | Kouji Kai, Tuyosi Shinozaki, Mitoshi KAI | 2025-09-16 |
| 9202622 | Welding transformer and welding transformer assembly and welding apparatus | Koji Kai, Akira Nagai, Kazuhiro Suzuki | 2015-12-01 |