Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4356148 | Method for preventing corrosion and hydrogen embrittlement of tantalum-made equipment handling hot concentrated sulphuric acid therein | Naohiko Kagawa, Katsumi Yamamoto, Takao Kusakabe, Yasuhiro Moriya | 1982-10-26 |