Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685640 | Fly ash dosing method for dosing and device therefor | Frank Goedicke, Wilhelm Herzmann | 1997-11-11 |
| 5590479 | Method for continuously crystallizing and polymerizing synthetic material and a device for it | Brent Allan Culbert, Eszter Trenka | 1997-01-07 |