Patents by Inventor Robert E. Eberts

Robert E. Eberts 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).

  • Bismuth oxychloride nacreous pigment having improved weather fastness and the production thereof
    Patent number: 5149369
    Abstract: Bismuth oxychloride nacreous pigment coated with a rare earth metal compound is described. The coated pigment is prepared by adding a rare earth metal salt solution to a suspension of bismuth oxychloride pigment crystals to form a further suspension containing the pigment crystals and cerium hydroxide. The cerium hydroxide is then precipitated out of the further suspension to coat the pigment crystals. The coated pigment is endowed with improved weather fastness.
    Type: Grant
    Filed: January 6, 1992
    Date of Patent: September 22, 1992
    Assignee: Mearl Corporation
    Inventors: Robert E. Eberts, Robert M. Juby, II, Michael T. Venturini, II
  • Bismuth oxychloride-mica nacreous pigments with enhanced luster and dispersibility
    Patent number: 3980491
    Abstract: Bismuth oxychloride-mica nacreous pigments are improved in luster by the deposit of hydrous titanium hydroxide. Depending on the amount of hydrous titanium hydroxide deposited, the nacreous pigment can also exhibit improved aqueous-organic phase transferability.
    Type: Grant
    Filed: December 1, 1975
    Date of Patent: September 14, 1976
    Assignee: The Mearl Corporation
    Inventor: Robert E. Eberts