Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4911351 | Method of manufacturing heat-exchanger | Kazunori Ishikawa | 1990-03-27 |
| 4906534 | Composite aluminum thin plates for brazing and method for preparing same | Yoichiro Bekki, Kazunori Ishikawa, Takeyoshi Doko, Eiji Itaya | 1990-03-06 |