Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6286526 | Method for treatment of semiconductor substrate with chemical solution and apparatus used for said treatment | Kenichi Yamamoto, Akinobu Nakamura | 2001-09-11 |
| 6171975 | Wet-chemical treatment method, treatment method of semiconductor substrate, and manufacturing method of semiconductor device | Kenichi Yamamoto, Ichiro Miyazawa | 2001-01-09 |
| 6033459 | Gas collection apparatus, gas analyzing apparatus using the same and gas analyzing method | — | 2000-03-07 |
| 6030844 | Method and apparatus for pre-analyzing treatment for subsequent analysis of metal components in volatile alkali solution and non-volatile anion in volatine acid solution and method and apparatus for the subsequent analysis | — | 2000-02-29 |
| 5841022 | Gas analyzer and gas analysis method | — | 1998-11-24 |
| 5714676 | Method and apparatus for analyzing gas components and apparatus for collecting sample gases | — | 1998-02-03 |
| 5516701 | Method for trace analysis of impurity, and light absorption measuring apparatus, measuring cell and aliquotting device used in the method | Kazuhisa YOSHIMURA | 1996-05-14 |