Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6478851 | Ethylene treatment by gas permeation | Hermann Berwe, Rüdiger Knauf, Herbert Neumann, Matthias Stumpf | 2002-11-12 |
| 6365784 | Preparation of ethylene by gas permeation | Hermann Berwe, Rüdiger Knauf, Herbert Neumann, Matthias Stumpf | 2002-04-02 |
| 5150985 | Method of disposing of salt-containing dusts from incinerator plants | Werner Roesky, Dieter Deffner | 1992-09-29 |
| 4941772 | Method of disposing of salt-containing dusts from incinerator plants | Werner Roesky, Dieter Deffner | 1990-07-17 |
| 4601887 | Apparatus for improving the degree of graphitization of carbon black, and its use | Friedrich-Wilhelm Dorn, Gero Heymer | 1986-07-22 |
| 4530769 | Process for separating carbon black from an aqueous suspension | Friedrich-Wilhelm Dorn, Gero Heymer, Hans-Werner Stephan | 1985-07-23 |
| 4482460 | Process for removing carbon black from aqueous suspensions | Joachim Kandler | 1984-11-13 |
| 4320108 | Process for the removal of metals from carbon black | Gero Heymer | 1982-03-16 |