Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5642183 | Spatial filter used in a reduction-type projection printing apparatus | Takashi Sugihara, Takashi Fukushima | 1997-06-24 |
| 5396311 | Filter for projection photolithographic system | Takashi Fukushima, Takashi Sugihara | 1995-03-07 |