Patents by Inventor Roy J. Sippel

Roy J. Sippel 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).

  • Synthesis of alumina acetate monohydrate salt sol fibers and uses thereof
    Patent number: 6432531
    Abstract: A cationic fibrous acetate salt of boehmite alumina produced by providing a slurry of water and basic aluminum acetate, stirring the slurry to ensure substantially complete mixing thereof, reacting the slurry in a vessel for a time, temperature, and stirring rate sufficient to produce a fibrous cationic acetate salt of boehmite alumina having a zeta potential of greater than about 25 and a weight ratio of aluminum to acetate of less than about 4.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: August 13, 2002
    Inventors: Roy J. Sippel, Eugene A. Pasek, Ke Feng
  • Synthesis of alumina acetate monohydrate salt sol fibers and uses thereof
    Publication number: 20020039652
    Abstract: A cationic fibrous acetate salt of boehmite alumina produced by providing a slurry of water and basic aluminum acetate, stirring the slurry to ensure substantially complete mixing thereof, reacting the slurry in a vessel for a time, temperature, and stirring rate sufficient to produce a fibrous cationic acetate salt of boehmite alumina having a zeta potential of greater than about 25 and a weight ratio of aluminum to acetate of less than about 4.
    Type: Application
    Filed: May 18, 2001
    Publication date: April 4, 2002
    Inventors: Roy J. Sippel, Eugene A. Pasek, Ke Feng