Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879041 | Process for producing ultra-pure water and process for using said ultra-pure water | Hideaki Kurokawa, Akira Yamada, Yasuo Koseki, Harumi Matsuzaki, Katsuya Ebara +5 more | 1989-11-07 |
| 4876983 | Plasma operation apparatus | Takuya Fukuda, Yasuhiro Mochizuki, Shigeru Takahashi, Noboru Suzuki, Tadasi Sonobe +2 more | 1989-10-31 |
| 4862240 | Complementary semiconductor device | Atsuo Watanabe, Takahiro Nagano, Takahide Ikeda, Ryuichi Saito | 1989-08-29 |