Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6939926 | Phenol novolak resin, production process thereof, and positive photoresist composition using the same | Yasuhide Ohuchi, Atsuko Hirata, Kousuke Doi, Hidekatsu Kohara, Toshimasa Nakayama | 2005-09-06 |