Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5366511 | Wool dyeing utilizing controlled dye addition | Winfried T. Holfeld | 1994-11-22 |
| 5318598 | Nonaqueous polyamide dyeing process utilizing controlled dye addition | Winfried T. Holfeld | 1994-06-07 |
| 5314504 | Process for the application of dye fixing agents to polyamide fiber utilizing controlled fixing agent addition | Winfried T. Holfeld | 1994-05-24 |
| 5230709 | Polyamide dyeing process utilizing controlled anionic dye addition | Winfried T. Holfeld | 1993-07-27 |