WH

Winfried T. Holfeld

EA E.I. Du Pont De Nemours And: 3 patents #23 of 718Top 4%
📍 Wilmington, DE: #11 of 274 inventorsTop 5%
🗺 Delaware: #25 of 535 inventorsTop 5%
Overall (1994): #7,553 of 165,921Top 5%
3
Patents 1994

Issued Patents 1994

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5366511 Wool dyeing utilizing controlled dye addition Dale E. Mancuso 1994-11-22
5318598 Nonaqueous polyamide dyeing process utilizing controlled dye addition Dale E. Mancuso 1994-06-07
5314504 Process for the application of dye fixing agents to polyamide fiber utilizing controlled fixing agent addition Dale E. Mancuso 1994-05-24