Patents by Inventor Ricardo M. Carvalho

Ricardo M. Carvalho 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).

  • Method of reducing dentin sensitivity and compositions therefor
    Patent number: 6506055
    Abstract: A method of reducing dentin sensitivity comprising: applying an effective amount of an acid to a dentin surface to form a treated surface; and administering an effective amount of an acidic oxalate to the treated surface so as to occlude dentinal tubules beneath the dentin surface. The method may optionally comprise the subsequent application of a suitable bonding agent. The invention further provides a kit for the treatment of dentin sensitivity, comprising a first container of an acid treatment composition, and a second container of an acidic oxalate composition.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: January 14, 2003
    Assignee: MCG Research Institute
    Inventors: David H. Pashley, Ricardo M. Carvalho, Jose C. Pereira
  • Method of reducing dentin sensitivity and compositions therefor
    Patent number: 6406529
    Abstract: A method of reducing dentin sensitivity comprising: applying an effective amount of an acid to a dentin surface to form a treated surface; and administering an effective amount of an acidic oxalate to the treated surface so as to occlude dentinal tubules beneath the dentin surface. The method may optionally comprise the subsequent application of a suitable bonding agent. The invention further provides a kit for the treatment of dentin sensitivity, comprising a first container of an acid treatment composition, and a second container of an acidic oxalate composition.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: June 18, 2002
    Assignee: MCG Research Institute
    Inventors: David H. Pashley, Ricardo M. Carvalho, Jose C. Pereira