Patents Assigned to Dental Chemical Co., Ltd.
  • Dentifrice compositions
    Patent number: 4342741
    Abstract: A dentifrice composition containing synthetic hydroxyapatite powder preferably in an amount of from 5 to 60% by weight and being slightly or weakly acidic preferably having a pH of from 4 to 6.9. The dentifrice composition is very effective in eliminating plaque from tooth surfaces and also has a high fortifying and remineralizing effect on the tooth surfaces.
    Type: Grant
    Filed: April 27, 1981
    Date of Patent: August 3, 1982
    Assignee: Dental Chemical Co., Ltd.
    Inventor: Hideki Aoki
  • Dentifrice compositions
    Patent number: 4327079
    Abstract: A dentifrice composition containing synthetic hydroxyapatite powder which is neutral or weakly alkaline or contains 0.1 to 20% by weight of NaCl and/or KCl and 0.003 to 3% by weight of MgCl.sub.2. The dentifrice composition is very effective in fortifying a surface of a tooth, promoting remineralization of the surface of the tooth and eliminating plaque from the tooth.
    Type: Grant
    Filed: October 29, 1980
    Date of Patent: April 27, 1982
    Assignee: Dental Chemical Co., Ltd.
    Inventor: Hideki Aoki