Patents by Inventor Doreen Howard

Doreen Howard 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).

  • Use of water-soluble/dispersible reactive functionalized derivatives of polyimido compounds for modifying proteinaceous substrates
    Patent number: 6303794
    Abstract: This invention relates to water-soluble/dispersible reactive functionalized imido and polyimido compounds, wherein the polyimido compounds may be selected from the group consisting of polysuccinimide compounds, polyglutimide compounds, and copolymers of thereof. The polyimido compound comprises a functionalizing moiety F that provides functionality to the polyimido compound and is preferably derived from a nucleophilic moiety selected from the group consisting of amines, alcohols, phenols, thiols, and carboxylates; and a water-solubilizing/dispersing moiety that provides water-solubility and/or water-dispersibility to the polyimido compound and is preferably derived from a nucleophilic moiety selected from the group consisting of amines, alcohols, phenols, thiols, and carboxylates. The invention also pertains to a proteinaceous substrate to which the imido or polyimido compound has been covalently bonded and to a method for treating a proteinaceous substrate with the imido or polyimido compound.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: October 16, 2001
    Assignee: National Starch & Chemical Investment Holding Corp.
    Inventors: Jacob J. Guth, Samual A. Vona, Jr., John S. Thomaides, Doreen Howard, Paul M. Petersen, Carmine Iovine