Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6082135 | Air separation method and apparatus to produce an oxygen product | Robert F. Duke, Joseph P. Naumovitz | 2000-07-04 |
| 5987918 | Method of separating nitrogen from air | Karl O. Toppel | 1999-11-23 |
| 5934106 | Apparatus and method for producing nitrogen | Kurt V. Mc Poland, Jennifer A. Goodbody | 1999-08-10 |
| 5689973 | Air separation method and apparatus | Joseph P. Naumovitz | 1997-11-25 |