Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6472800 | Filter substrate and display device | Katsuya Kamisaku, Sadao Kuzuwa | 2002-10-29 |
| 5326720 | Method for producing silicon dioxide film which prevents escape of Si component to the environment | Yasuto Sakai, Akihiro Hishinuma, Hideo Kawahara, Shigehito Deki | 1994-07-05 |
| 5132140 | Process for depositing silicon dioxide films | Hirotsugu Nagayama, Hideo Kawahara, Yasuto Sakai, Akihiro Hishinuma | 1992-07-21 |
| 5073408 | Method of depositing a silicon dioxide film | Hirotsugu Nagayama, Hideo Kawahara | 1991-12-17 |