Patents by Inventor Brian J. Tear

Brian J. Tear 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 treating inorganic oxide pigments
    Patent number: 4224080
    Abstract: Inorganic oxides pigments, coated with alumina are treated with water soluble hydroxy acids or salts for example sodium citrate, and with water soluble di- or polyhydric alcohols, for example pentaerythritol, or with a water soluble reaction product of excess di- or polybasic organic hydroxy acids with di- or polyhydric alcohol. Titanium dioxide pigment so treated may be used in both emulsion paint and in organic based paint systems.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: September 23, 1980
    Assignee: Laporte Industries Ltd.
    Inventors: Hubert H. Chambers, Brian J. Tear