Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5268479 | Process for the preparation of tertiary phosphines | Othmar Stelzer, Norbert Weferling | 1993-12-07 |
| 5003108 | Process for the preparation of phosphanes | Othmar Stelzer, Jurgen Svara, Norbert Weferling | 1991-03-26 |