Patents by Inventor Eugene M. Urban, Jr.

Eugene M. Urban, Jr. 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).

  • Process for preparing precipitated red iron oxides
    Patent number: 4256723
    Abstract: A precipitated red iron oxide, having high crystallinity, low acicularity, unifrom particle size, and purity of color, is produced by aerating an alkaline mixture of copperas and soda ash to form seed crystals, increasing the temperature, adding additional copperas, and aerating the mixture to form red oxide crystals of the desired color. The final color can vary from a light salmon to a dark maroon.
    Type: Grant
    Filed: May 3, 1979
    Date of Patent: March 17, 1981
    Assignee: Cities Service Company
    Inventor: Eugene M. Urban, Jr.
  • Manufacture of iron oxides
    Patent number: 3974267
    Abstract: Ferrous hydroxide, formed from ferrous sulfate and sodium hydroxide at high alkalinity, is air-oxidized at a high rate to form ferric hydroxide seed crystals. The air rate is then decreased, and the seeds are allowed to grow to the desired acicular hydrated yellow ferric oxide.
    Type: Grant
    Filed: April 24, 1975
    Date of Patent: August 10, 1976
    Assignee: Cities Service Company
    Inventor: Eugene M. Urban, Jr.