Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4591454 | Apparatus and method for melting and treating metal wastes | Katsuyuki Ohtsuka, Koji Yanagida, Kazuo Kitagawa, Atsuhiro Ochiai, Minoru Harada +1 more | 1986-05-27 |
| 4587098 | Method of stabilized operation of acid digestion kettle of tantalum | Katsuyuki Ohtsuka, Hitoshi Miyazaki, Toshio Fukuzuka, Kazutoshi Shimogori, Hiroshi Satoh +1 more | 1986-05-06 |