Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7175765 | Method for treating for-treatment water containing organic matter and nitrogen compound | Atsushi Yamada, Mineo Ikematsu, Masahiro Iseki, Daizo Takaoka, Yui Ogawa | 2007-02-13 |
| 5878132 | High-frequency noise elimination for use in telephone systems | Yukio Sakamoto, Hidetoshi Yamamoto | 1999-03-02 |