Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6124493 | Process for the preparation of o-chloromethyl-phenylglyoxylic acid derivatives | Hans-Dieter Schneider, Albert Pfiffner, Werner Pfaff | 2000-09-26 |
| 5756811 | Process for the preparation of o-chloromethyl-phenylglyoxylic acid derivatives | Hans-Dieter Schneider, Albert Pfiffner, Werner Pfaff | 1998-05-26 |