Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830763 | Process for increasing the degree of whiteness of polyester-containing textile material | Heinz Hefti, Dieter Reinehr, Jurgen Kaschig | 1989-05-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830763 | Process for increasing the degree of whiteness of polyester-containing textile material | Heinz Hefti, Dieter Reinehr, Jurgen Kaschig | 1989-05-16 |