Patents by Inventor John William Haefele

John William Haefele 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 for plaque, caries and calculus retardation with reduced staining tendencies
    Patent number: 4025616
    Abstract: Oral compositions such as toothpastes, mouthwashes and the like containing an insoluble bis-biguanide compound which inhibits the formation of plaque and caries with reduced tendency of the bis-biguanide compound to produce a stain on oral surfaces as compared to soluble compounds.
    Type: Grant
    Filed: November 25, 1975
    Date of Patent: May 24, 1977
    Assignee: The Procter & Gamble Company
    Inventor: John William Haefele
  • Oral compositions for plaque, caries, and calculus retardation with reduced staining tendencies
    Patent number: 3937807
    Abstract: Oral compositions such as toothpastes, mouthwashes and the like containing a particular substantive bis-biguanide compound which inhibits the formation of plaque and caries, and a specific amino carboxylate compound which inhibits the tendency of the bis-biguanide compound to produce a stain on oral surfaces, preferably while maintaining the bis-biguanide as a water-soluble salt.
    Type: Grant
    Filed: July 9, 1974
    Date of Patent: February 10, 1976
    Assignee: The Procter & Gamble Company
    Inventor: John William Haefele
  • Oral compositions for plaque, caries and calculus retardation with reduced staining tendencies
    Patent number: 3934002
    Abstract: Oral compositions such as toothpastes, mouthwashes and the like containing a particular substantive -bis-biquanide compound which inhibits the formation of plaque and caries, and an anti-calculus agent which inhibits the tendency of the bis-biguanide compound to produce a stain on oral surfaces.
    Type: Grant
    Filed: April 24, 1974
    Date of Patent: January 20, 1976
    Assignee: The Procter & Gamble Company
    Inventor: John William Haefele