Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857225 | Cleaning chemical for aluminium surface | Haruyoshi Terada, Youji Ono, Yokichi Satoh | 1989-08-15 |
| 4830101 | Aluminum heat exchanger and method for producing aluminum heat exchanger | Toshio Ohara, Toshio Takahashi, Masayoshi Nishikawa, Tutomu Niwa, Takao Ogino +1 more | 1989-05-16 |