Patents by Inventor Bryony E. Coulson

Bryony E. Coulson 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: 5112599
    Abstract: The present invention relates to oral compositions such as dentifrices which contain hydroxyapatite as abrasive material. The compatibility of hydroxyapatite with fluorine-containing anti-caries agents is improved by providing a pH of the oral compositions of between 7.0 and 11.0.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: May 12, 1992
    Assignee: Chesebrough-Pond's USA Co., division of Conopco, Inc.
    Inventor: Bryony E. Coulson
  • Oral compositions
    Patent number: 5089254
    Abstract: The present invention relates to an anti-caries oral composition which comprises a fluorine-containing anti-caries agent and a particulate hydroxyapatite abrasive material. The compatibility of the hydroxyapatite with the fluorine compound is improved by pretreating the surface of the hydroxyapatite material with compounds that block the hydroxy groups, present at the surface of the hydroxyapatite. Such compounds are preferably alkaline materials such as sodium hydroxide, sodium-trimetaphosphate, tetrasodium pyrophosphate, sodium carbonate.
    Type: Grant
    Filed: January 8, 1991
    Date of Patent: February 18, 1992
    Assignee: Chesebrough-Pond's USA Co., Division of Conopco, Inc.
    Inventor: Bryony E. Coulson
  • Oral compositions
    Patent number: 4988499
    Abstract: The invention relates to oral compositions for combating dental caries. The compositions comprise a fluorine-containing anti-caries agent such as sodium fluoride or sodium monofluorophosphate and a particulate hydroxyapatite as abrasive. These ingredients are surprisingly compatible in that there is a reduced loss of available fluoride upon storage.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: January 29, 1991
    Assignee: Unilever Patent Holdings, B.V.
    Inventors: Neil J. Bristow, Peter Carter, Bryony E. Coulson, Michael A. Trevethan
  • Oral preparations
    Patent number: 4933173
    Abstract: The present invention relates to oral preparations having anti-caries activity. The compositions comprise a water-soluble casein material or sodium trimetaphosphate as an anti-caries agent, and a particulate hydroxyapatite as a compatible abrasive material.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: June 12, 1990
    Assignee: Unilever Patent Holdings B.V.
    Inventors: Neil J. Bristow, Peter Carter, Bryony E. Coulson, Michael A. Trevethan
  • Oral compositions
    Patent number: 4933171
    Abstract: The present invention relates to oral compositions for treating sensitive teeth.These compositions comprise an agent for desensitizing sensitive teeth, such as potassium nitrate of strontium acetate, and a particulate abrasive material which is hydroxyapatite. The hydroxyapatite is compatible with the desensitizing agent.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: June 12, 1990
    Assignee: Unilever Patent Holdings B.V.
    Inventors: Neil J. Bristow, Peter Carter, Bryony E. Coulson, Michael A. Trevethan