Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5325181 | Nulling optical bridge for measurement of changes in reflectivity and/or transmissivity | — | 1994-06-28 |
| 5022765 | Nulling optical bridge for contactless measurement of changes in reflectivity and/or transmissivity | Daniel Guidotti, Swie-In Tan | 1991-06-11 |
| 4587464 | Electron beam control system | Cecil T. Ho | 1986-05-06 |