Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6313228 | Peroxidic treatment of olefin polymers | Karl Huber, Jürgen Schwind, Hermann Elser, Horst Klassen, Karl-Heinz Kagerbauer | 2001-11-06 |
| 4600565 | Process for making manganese (II) salt solutions containing ammonium salt | Bernhard Hofmann, Gero Heymer | 1986-07-15 |
| 4482527 | Process for removing nitrogen dioxide from off-gas | Gero Heymer | 1984-11-13 |
| 4447400 | Metering device | Hans-Werner Stephan, Hermann Klein | 1984-05-08 |
| 4418043 | Process for separating metals from aqueous solutions | Gero Heymer | 1983-11-29 |
| 4394360 | Process for reducing iron in phosphoric acid solution | Klaus Schrodter | 1983-07-19 |
| 4392962 | Process for separating metals from aqueous solutions | Gero Heymer, Christian May, Hermann Klein | 1983-07-12 |
| 4330504 | Apparatus for making red phosphorus | Gero Heymer, Hans-Werner Stephan, Ursus Thummler | 1982-05-18 |
| 4273752 | Process for making red phosphorus | Gero Heymer, Hans-Werner Stephan, Ursus Thummler | 1981-06-16 |