Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820750 | Pigmented vinyl chloride polymer or blend thereof having improved mechanical properties | Marvin H. Lehr | 1989-04-11 |
| 4816303 | Process for inhibiting corrosion of metal and corrosion-inhibiting layer use therein | William J. Kroenke, Anthony M. Mazany | 1989-03-28 |