Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5635590 | Process and polycondensation apparatus for the treatment of contaminated ethylene glycol | Jurgen Rink, Klaus Stemmer | 1997-06-03 |
| 5596068 | Polyester resin for producing articles having high transparency and a neutral color | Wolfgang Kramer, Wilhelm W ullscheidt, Theodor J urgens, Klaus Kleinecke | 1997-01-21 |