Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853445 | Dibutylin compounds in styrene monomer polymerization | Bernard H. Meyer, Joseph C. Kinslow, D. Harper Meek | 1989-08-01 |
| 4840759 | Isopentane as blowing agent to improve coffee retention in foam cups molded from expandable polystyrene | Edwin H. Niemann | 1989-06-20 |
| 4798749 | Isopentane as blowing agent to improve coffee retention in foam cups molded from expandable polystrene | Edwin H. Niemann | 1989-01-17 |