Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6268410 | Colored concrete roofing tiles and a method for producing colored concrete bodies such as colored concrete roofing tiles | Andreas Drechsler, Silke Werner | 2001-07-31 |
| 6090329 | Method of producing colored concrete bodies such as colored concrete roofing tiles | Andreas Drechsler, Silke Werner | 2000-07-18 |
| 5824147 | Silicate compound | Andreas Drechsler, Simon Newham, Ingo Rademacher | 1998-10-20 |
| 4937065 | Process for the chemical-thermal degradation of haolgenated hydrocarbons | Paul-Gerhard Maurer | 1990-06-26 |
| 4711185 | Process and apparatus for the decomposition of halogen and/or phosphoric containing organic materials | Jurgen Hofmann, Hans Huschka | 1987-12-08 |
| 4654203 | Process for the chemical thermodecomposition of higher halogenated hydrocarbons | Paul-Gerhard Maurer | 1987-03-31 |