Issued Patents 2002
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6471825 | Method for deflocculating and chemically loading fibers in a fiber suspension with calcium carbonate | Klaus Doelle, Kurt Lorenz, Werner Witek, Robert J. Matz | 2002-10-29 |
| 6458241 | Apparatus for chemically loading fibers in a fiber suspension | Klaus Doelle | 2002-10-01 |
| 6425982 | System for removing bleed-throughs from old corrugated container fiber pulp | Bangji Cao | 2002-07-30 |
| 6413365 | Method of loading a fiber suspension with calcium carbonate | Klaus Doelle | 2002-07-02 |
| 6394279 | Flotation machine for a fiber suspension and method of using same | Klaus Doelle, Werner Witek, Bangji Cao | 2002-05-28 |
| 6395131 | Flotation machine for a fiber suspension and method of using same | Klaus Doelle, Werner Witek, Bangji Cao | 2002-05-28 |