Patents by Inventor Joseph W. Pyrz

Joseph W. Pyrz 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).

  • Oral compositions
    Patent number: 4988500
    Abstract: Anhydrous oral compositions are disclosed containing an anhydrous humectant and a carboxyvinyl polymer neutralized with an appropriate base.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: January 29, 1991
    Assignee: The Procter & Gamble Company
    Inventors: Mary A. Hunter, Joseph W. Pyrz
  • Anticalculus compositions
    Patent number: 4847070
    Abstract: Disclosed are oral compositions which are effective against calculus and contain a chelating agent which is an acrylic acid polymer or copolymer or EDTA, a strontium ion source, a fluoride ion source and a pyrophosphate ion source.
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: July 11, 1989
    Assignee: The Procter & Gamble Company
    Inventors: Joseph W. Pyrz, Anthony C. Lanzalaco, Richard J. Sunberg