Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4478948 | Process for improving the activity of used supported silver catalysts | Sigmund Mayer, Josef Alfranseder | 1984-10-23 |
| 4471071 | Silver catalysts, and a process for their preparation | Sigmund Mayer, Josef Alfranseder | 1984-09-11 |
| 4458032 | Silver catalysts, a process for their preparation, and their use in preparing ethylene oxide | Sigmund Mayer, Josef Alfranseder | 1984-07-03 |
| 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 |
| 4186106 | Process for improving the activity of used supported silver catalysts | Sigmund Mayer, Josef Alfranseder, Josef Riedl | 1980-01-29 |