Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5776645 | Lithographic print bias/overlay target and applied metrology | Roger Lawrence Barr | 1998-07-07 |
| 5756238 | Lithographic print bias/overlay target and applied metrology | Roger Lawrence Barr | 1998-05-26 |
| 5677091 | Lithographic print bias/overlay target and applied metrology | Roger Lawrence Barr | 1997-10-14 |