Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887907 | Rotary extruder with internally cooled rotor | Sammy Kent Flud | 1989-12-19 |
| 4879138 | Composition for plastic article with unitarily molded foam layer | Marion Johnson, Ramiro V. Ramoos | 1989-11-07 |
| 4872573 | Plastic closure with barrier coating | Marion Johnson | 1989-10-10 |
| 4866100 | Composition for plastic article with unitarily molded foam layer | Marion Johnson, Ramiro V. Ramos | 1989-09-12 |
| 4839969 | Drying method and apparatus | — | 1989-06-20 |
| 4813863 | Rotary extruder with a gear pump | Raleigh N. Rutledge, Durward E. Rutledge | 1989-03-21 |