Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4349417 | Process for the manufacture of extremely pure monoethylene glycol | Sigmund Mayer, Josef Alfranseder, Iwo Schaffelhofer | 1982-09-14 |
| 4335014 | Process for improving the activity of supported silver catalysts | Josef Alfranseder, Sigmund Mayer, Josef Riedl, Iwo Schaffelhofer | 1982-06-15 |