Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4308337 | Uniform light exposure of positive photoresist for replicating spiral groove in plastic substrate | Dietrich Meyerhofer | 1981-12-29 |
| 4306013 | Asymmetrical radiation exposure of spin coated photoresist to obtain uniform thickness coating used to replicate spiral grooves in plastic substrate | William Henderson | 1981-12-15 |
| 4236823 | Diffractometer for measuring signal depth and width | Ping Sheng | 1980-12-02 |