Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877538 | Sulfomethylated stain blocking agents | Michel A. Herlant | 1989-10-31 |
| 4865885 | Food color stain blocking fiber agents | Michel A. Herlant, Vincent W. Bannigan, Jr. | 1989-09-12 |
| 4857392 | Stainblocker and fluorocarbon oil repellents | Dieter Hoecklin | 1989-08-15 |
| 4813970 | Method for improving the lightfasteness of nylon dyeings using copper sulfonates | Vincent W. Bannigan, Jr. | 1989-03-21 |