Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6509964 | Multi-beam apparatus for measuring surface quality | Charles Prain | 2003-01-21 |
| 5686731 | Multi-parameter scanning system with moveable field mask | Charles Prain | 1997-11-11 |
| 5570183 | Apparatus for measuring optical characteristics of a surface in two dimensions using a moving light source | — | 1996-10-29 |
| 4761676 | Fault detection and reset in surface reflectance meter | Robert J. Matzoll | 1988-08-02 |