Patents by Inventor Paul Petrignani

Paul Petrignani 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).

  • SURFACE MINERALIZED ORGANIC FIBERS AND METHODS OF MAKING THE SAME
    Publication number: 20230228036
    Abstract: A method of making a mineralized fiber having a fiber core and a calcium carbonate shell can include admixing fibers with green liquor and adding CaO to generate a causticization reaction that results in a calcium carbonate shell coating forming around the fibers.
    Type: Application
    Filed: June 9, 2021
    Publication date: July 20, 2023
    Inventors: Joseph Andrew Sohara, John Hockman, Harry John Huhn, III, Paul Petrignani