Patents by Inventor Paul Richard Sherrington

Paul Richard Sherrington 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).

  • Builders and built detergent compositions
    Patent number: 4116852
    Abstract: Detergent compositions utilizing alkali metal pyrophosphate as the principal detergency builder incorporate a phosphate builder mixture comprising from about 1% to about 15% by weight of the mixture of tripoly -- and higher polymeric phosphates and not more than 1% by weight of the mixture of orthophosphates Other types of builders both soluble and insoluble can also be present.
    Type: Grant
    Filed: August 24, 1977
    Date of Patent: September 26, 1978
    Assignee: The Procter & Gamble Company
    Inventors: John Bailey, Michael John Randell, Paul Richard Sherrington
  • Orthophosphate and silica-containing composition
    Patent number: 4089795
    Abstract: The present invention relates to detergent additive and detergent compositions containing an alkali metal ortho phosphate and silicas which are particularly effective in cleaning ability, whiteness maintenance, and in controlling water hardness.
    Type: Grant
    Filed: February 12, 1976
    Date of Patent: May 16, 1978
    Assignee: The Procter & Gamble Company
    Inventors: John Bailey, Michael John Randell, Paul Richard Sherrington