Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8808451 | Reducing agent for the soluble chromate content of cement and methods for production thereof | Michael Vössing, Auer Gerhard, Detlef Klein, Werner Schuy, Klaus Köllisch +3 more | 2014-08-19 |
| 7537749 | Method for processing iron-laden spent sulfuric acid | Gerhard Auer, Berndt-Ullrich Kohler | 2009-05-26 |
| 5108732 | Process for the preparation of finely divided ceramic oxide powders from precursor compounds | Wolgang Krumbe | 1992-04-28 |
| 5066473 | Silicon nitride powders of low isoelectric point and processes for their production | Ulrike Pitzer, Gerhard Franz | 1991-11-19 |
| 5030434 | Silicon nitride powders with improved surface properties and processes for their preparation | Ulrike Pitzer, Gerhard Franz | 1991-07-09 |
| 4983371 | Silicon nitride powder of low oxygen content | Ulrike Pitzer, Gerhard Franz | 1991-01-08 |
| 4980322 | Sinterable SI.sub.3 N.sub.4 powders containing sintering additives and a process for their preparation | Ulrike Wickel, Gerhard Franz | 1990-12-25 |
| 4948762 | Process for the preparation of finely divided carbides and nitrides from ceramic precursor-compounds | Wolfgang Krumbe, Gerhard Franz | 1990-08-14 |
| 4845060 | Sinterable Si.sub.3 N.sub.4 powder and a process for its preparation | Ulrike Wickel, Gerhard Franz | 1989-07-04 |