Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5498334 | Filter for a plastic (synthetic resin) melt | — | 1996-03-12 |
| 5449458 | Filter system for molten plastic | — | 1995-09-12 |
| 5407586 | Filter-changing method for a molten plastic filtration apparatus | — | 1995-04-18 |
| 5362223 | Filter-changing system for molten plastic | — | 1994-11-08 |
| 5090887 | Sieve arrangement for cleaning synthetic plastic melts | — | 1992-02-25 |
| 4850840 | Screening device for purifying plastic melts | — | 1989-07-25 |
| 4619600 | Sieve device for cleaning plastic melts | — | 1986-10-28 |
| 4588502 | Sieve device for cleaning molten plastics | Bodo Zibell, Hubert Patrovsky | 1986-05-13 |
| 4464104 | Adjustable ring nozzle for extruding synthetic-resin tubing | — | 1984-08-07 |