Patents by Inventor Hugh Robert Hays

Hugh Robert Hays 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).

  • Detergent compositions having improved soil release properties
    Patent number: 3962152
    Abstract: Detergent compositions containing surface-active agents and soil release polymers comprising ethylene terephthalate and polyethylene oxide terephthalate provide improved cleaning and impart a soil release finish to synthetic fabrics treated therewith.
    Type: Grant
    Filed: June 25, 1974
    Date of Patent: June 8, 1976
    Assignee: The Procter & Gamble Company
    Inventors: Charles Henry Nicol, Hugh Robert Hays
  • Polyethylene oxide terephthalate polymers
    Patent number: 3959230
    Abstract: Novel terephthalate polymers containing ethylene terephthalate and polyethylene oxide terephthalate units in specific molar ratios and a process for imparting improved soil release properties to fabrics by treating said fabrics with a dilute aqueous solution of said polymers are provided.
    Type: Grant
    Filed: June 25, 1974
    Date of Patent: May 25, 1976
    Assignee: The Procter & Gamble Company
    Inventor: Hugh Robert Hays