Patents by Inventor Penelope C. Craven

Penelope C. Craven 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).

  • Patent number: 4448817
    Abstract: A method finishing keratinous textile articles, for example wool fabrics, which comprises treating the articles with an anti-felt polymer for example isocyanate functional or bunte salt functional polymers, and a polymer of chlorinated ethylenically unsaturated monomer, for example polyvinyl chloride, polyvinylidene chloride, polypropylene, and dichlorobutadiene. Thereafter, the articles are treated with an anionic titanium or zirconium complex at low pH. Textiles so treated exhibit both shrink-resistant and flame-retardant properties.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: May 15, 1984
    Assignee: Wool Development International Limited
    Inventors: Ladislav Benisek, Penelope C. Craven