Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4957428 | Process for constructing furnaces with open chambers, for avoiding deformation thereof | Aristide Valassopoulos, Christian Dreyer | 1990-09-18 |
| 4859175 | Apparatus and process for optimizing combustion in chamber-type furnaces for baking carbonaceous blocks | Christian Dreyer, Claude Vanvoren | 1989-08-22 |
| 4504219 | Heating apparatus for circulatory-firing open baking furnaces and process for use of the apparatus | — | 1985-03-12 |