Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5671044 | Method of examining film quality of a membranal material and an apparatus therefor | Yoshinori Shimada | 1997-09-23 |
| 5658841 | Composite catalyst containing photocatalyst dispersed in alkali metal silicate matrix | Teruaki Hisanaga, Yin-Sheng Chen | 1997-08-19 |