Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874391 | Process for photochemical stabilization of polyamide fiber material and mixtures thereof with other fibers: water-soluble copper complex dye and light-stabilizer | — | 1989-10-17 |
| 4831068 | Process for improving the photochemical stability of dyeings on polyester fibre materials | Kurt Burdeska | 1989-05-16 |