Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5216918 | Fluid mass flow detecting | Donald G. Landis, David Linzy | 1993-06-08 |
| 4854266 | Cross-flow diffusion furnace | Morris Simson, Ronnie Browne, Arthur Waugh, Robert F. Sarkozy, Chiu K. S. Lai | 1989-08-08 |
| 4672997 | Modular, self-diagnostic mass-flow controller and system | Donald G. Landis | 1987-06-16 |
| 4276603 | Diffusion furnace microcontroller | Martin Beck, Donald G. Landis | 1981-06-30 |