Patents by Inventor David W. Blake

David W. Blake 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).

  • High dry hide TiO.sub.2 slurries
    Patent number: 4227935
    Abstract: High dry hide titanium dioxide pigment slurries are prepared from in-process material which is treated with low amounts of aluminum oxide.
    Type: Grant
    Filed: February 16, 1979
    Date of Patent: October 14, 1980
    Assignee: American Cyanamid Company
    Inventors: David W. Blake, Alberto W. Delgado, Gerard M. Sheehan
  • Titanium dioxide slurries from recycle material
    Patent number: 4170485
    Abstract: High gloss titanium dioxide pigment slurries are prepared by using the underflow from the thickener, optionally treated with aluminum oxide, plus an organic dispersant, plus optionally a polyol.
    Type: Grant
    Filed: August 22, 1978
    Date of Patent: October 9, 1979
    Assignee: American Cyanamid Company
    Inventors: David W. Blake, Gerard M. Sheehan, John D. Rowland, George L. Roberts