Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6600067 | Process for preparing ethylenediphosphonic acids | Hans-Peter Schmitz | 2003-07-29 |
| 6600068 | Process for preparing ethanebis(methylphosphinic) acid | Hans-Peter Schmitz | 2003-07-29 |
| 6583315 | Process for preparing ethanebis(alkylphosphinic) acids | Norbert Weferling, Hans-Peter Schmitz | 2003-06-24 |
| 6569974 | Polymeric phosphinic acids and salts thereof | Norbert Weferling, Hans-Peter Schmitz | 2003-05-27 |