Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884520 | Loop taker and sewing machine | — | 1989-12-05 |
| 4859439 | Catalyst and a method for denitrizing nitrogen oxides contained in waste gases | Hiroaki Rikimaru, Tadao Nakatsuji, Toshikatsu Umaba, Kuzuhiko Nagano, Kazuya Mishina | 1989-08-22 |