Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5472550 | Method and apparatus for protecting a substrate surface from contamination using the photophoretic effect | — | 1995-12-05 |
| 5439513 | Device for focussing particles suspended in a gas stream | David S. Ensor, Robert P. Donovan | 1995-08-08 |
| 5366559 | Method for protecting a substrate surface from contamination using the photophoretic effect | — | 1994-11-22 |
| 5229171 | Apparatus and method for uniformly coating a substrate in an evacuable chamber | Robert P. Donovan, Anthony Clint Clayton, David S. Ensor | 1993-07-20 |