Patents Represented by Law Firm Owen, Sickersham & Erickson
  • Toothpaste having low abrasion
    Patent number: 4986981
    Abstract: A toothpaste characterized by a low abrasion, non-reactive base formulation. The toothpaste has a near neutral or neutral pH. The toothpaste contains a concentration of citric acid, sodium or potassium citrate, papain, and fine-particle-sized aluminum oxide, in particular portions which effectively clean away plaque, mucin and tartar.
    Type: Grant
    Filed: July 12, 1989
    Date of Patent: January 22, 1991
    Assignee: Den Mat Corporation
    Inventors: William R. Glace, Robert L. Ibsen