Patents by Inventor Ernest Rivet

Ernest Rivet 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).

  • Process for imparting stain-resist agent
    Patent number: 5057121
    Abstract: A process for imparting stain resistance to polyamide substrates in continuous processes such as those using a Fluidyer.RTM. apparatus or a Flexnip.RTM. applicator and involving the application of a stain-resist composition containing a mixture of a hydrolyzed copolymer of maleic anhydride and one or more ethylenically unsaturated aromatic monomers with a sulfonated phenol-formaldehyde condensation product is disclosed wherein the stain-resist composition is applied at a pH between about 1.5 and about 3.0 in the prescence of an anionic surfactant in the form of an alkyl aryl sulfonic acid or an alkyl aryl sulfonate salt.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: October 15, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Patrick H. Fitzgerald, Joyce M. Materniak, Mead S. Moores, Ella D. Openstone, Ernest Rivet