Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883362 | Device for enriching a carrier gas with the vapor of a sparingly volatile substance | Georg Gartner, Peter A. Janiel | 1989-11-28 |
| 4877938 | Plasma activated deposition of an insulating material on the interior of a tube | Petrus F. De Jongh | 1989-10-31 |
| 4842839 | Process for the removal of hydrogen from hydrogen compounds dissolved in silicon tetrachloride or germanium tetrachloride | — | 1989-06-27 |