Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851134 | Process and apparatus for the removal of solid particles from liquid chlorinated hydrocarbons | Horst Bennoit, Walter Frohlich, Rolf Holtermann | 1989-07-25 |
| 4798914 | Process for the production of vinyl chloride through thermal cracking of 1,2-dichloroethane | Gerhard Link, Walter Frohlich, Georg Prantl, Iwo Schaffelhofer | 1989-01-17 |