Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8158311 | Method for managing light exposure mask and light exposure mask | Hideki Yamamoto, Akihiko Naitoh | 2012-04-17 |
| 8124301 | Gradated photomask and its fabrication process | Junji Fujikawa, Yuuichi Yoshida, Shiho Sasaki, Tsuyoshi Amano, Kimio Ito +2 more | 2012-02-28 |
| 7967917 | Method of cleaning storage case | Noriyuki Takahashi, Hiroyuki Nakajima, Hiroko Tanaka, Nobuyuki Kanda | 2011-06-28 |
| 7718008 | Method for cleaning photo mask | Noriyuki Takahashi, Hiroko Tanaka, Hiroyuki Ishii, Yusuke Shoji, Masashi Ohtsuki | 2010-05-18 |