Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5801833 | Method of producing master and working pattern plates for etching and photolithographic apparatus therefor | Kei Kobayashi | 1998-09-01 |
| 5500326 | Method of producing master and working pattern plates for etching and photolithographic apparatus therefor | Kei Kobayashi | 1996-03-19 |