Patents by Inventor Franz Pum

Franz Pum 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).

  • Gel composition
    Patent number: 4804705
    Abstract: Formation of a stable gel by reacting quaternized hydroxyethyl cellulose with either one or combination of sodium polystyrene sulfonate and polyacrylamidomethylpropane sulfonic acid.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: February 14, 1989
    Inventors: Franz Pum, Robert E. Saute