Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7176341 | Method and devices for producing naphthalene from coke produced from coke oven crude gas | Frank Rossa, Hans-Josef Giertz | 2007-02-13 |
| 7166197 | Coke oven door with wraparound gas channel and membrane | Hans-Josef Giertz, Klaus Dieter Ruthemann, Jürgen George, Franz Liesewitz, Friedrich-Wilhelm Cyris | 2007-01-23 |
| 4856917 | Device for the synchronous guidance of a roller bearing cage for a roller bearing executing swivel motion | Klaus Kispert, Robert Stolz, Werner Jacob | 1989-08-15 |
| 4688407 | Method and apparatus for radial expansion of rings | — | 1987-08-25 |
| 4233233 | Process for the preparation of 2-oxoiminophenylacetonitrile | Karl Goliasch, Uwe Beck | 1980-11-11 |