Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5741434 | Leather oiling preparations and their use | Wolfgang Ritter, Rudolf Zauns-Huber, Emil Ruscheinsky | 1998-04-21 |
| 5648518 | Process for producing esters of (meth) acrylic acid and polyhydric alcohols | Wolfgang Ritter, Ludwig Speitkamp | 1997-07-15 |
| 5567343 | New leather oiling preparations and their use | Wolfgang Ritter, Rudolf Zauns-Huber, Emil Ruscheinsky | 1996-10-22 |
| 5461124 | Reactive systems and/or polymer composition for tissue contact with the living body | Wolfgang Ritter | 1995-10-24 |
| 5350877 | Process for the improved production of (meth)acrylic acid esters of polyhydric alcohols (I) | Wolfgang Ritter, Ludwig Speitkamp | 1994-09-27 |
| 5278336 | Process for exchanging inhibitor(s) in olefinically unsaturated systems which are reactive via free radicals | Wolfgang Ritter | 1994-01-11 |
| 5210281 | Dry neutralization process for organic liquid phases | Wolfgang Ritter, Ludwig Speitkamp | 1993-05-11 |
| 5198574 | Process for the improved production of (meth)acrylic acid esters of polyhydric alcohols (II) | Wolfgang Ritter, Ludwig Speitkamp | 1993-03-30 |
| 5159106 | Process for the improved production of (meth)acrylic acid esters of polyhydric alcohols (VI) | Wolfgang Ritter, Ludwig Speitkamp | 1992-10-27 |