Patents by Inventor John J. Valachovic

John J. Valachovic 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).

  • Double precipitation reaction for the formation of high purity basic lead carbonate and high purity normal lead carbonate
    Patent number: 4336236
    Abstract: A process is provided for the preparation of high purity basic lead carbonate and high purity normal lead carbonate by a double precipitation reaction employing a single lead acetate feed solution. The process is particularly applicable to processes for producing lead monoxide from solid lead sulfate-bearing materials such as battery mud.
    Type: Grant
    Filed: March 25, 1981
    Date of Patent: June 22, 1982
    Assignee: NL Industries, Inc.
    Inventors: Michael A. Kolakowski, John J. Valachovic