Patents by Inventor Elizabeth A. Dodgson

Elizabeth A. Dodgson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

Aromatic polyamide fibers and method of printing such fibers with acid dyes in the presence of hexamethylene diamine dihydrochloride impregnated in fiber

Patent number: 5074889

Abstract: A diamine salt and a surfactant are imbibed into never-dried aromatic polyamide fibers which may be printed or overprinted with acid dyes, after drying.

Type: Grant

Filed: June 13, 1990

Date of Patent: December 24, 1991

Assignee: E. I. Du Pont de Nemours and Company

Inventors: James D. Hodge, Elizabeth A. Dodgson, David J. Rodini

Aromatic polyamide fibers and method of printing such fibers with acid dyes in the presence of hexamethylene diamine dihydrochloride impregnated in fiber