Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9139913 | Anti-corrosion treatment method for aluminum heat exchanger | Norizumi Matsui | 2015-09-22 |
| 4672662 | Switching system and method for network having a plurality of terminal control equipment units | Tetsuo Nishino, Yasunori Yamatani | 1987-06-09 |