Patents by Inventor Michael A. Kolakowski

Michael A. Kolakowski 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).

  • 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
  • Patent number: 4273746
    Abstract: In connection with the recycling of lead-acid batteries, lead-acid battery mud containing lead sulfate is desulfated by adding to the battery mud, which is maintained at a temperature less than 140.degree. F., an aqueous solution containing an ammonium reagent such as ammonium carbonate or ammonium bicarbonate. The ammonium reagent reacts with the lead sulfate to form an aqueous solution of ammonium sulfate and a lead carbonate precipitate. The aqueous solution of ammonium sulfate is then separated from the battery mud containing the lead carbonate precipitate.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: June 16, 1981
    Assignee: NL Industries, Inc.
    Inventor: Michael A. Kolakowski
  • Patent number: 4269811
    Abstract: An efficient and inexpensive method for producing lead monoxide from lead sulfate bearing materials such as recycled battery mud is provided comprising:(a) reacting said material with an ammonium carbonate solution to convert lead sulfate to lead carbonate;(b) decomposing the lead carbonate to form impure lead monoxide;(c) reacting the impure lead monoxide with acetic acid to form a lead acetate solution;(d) contacting the lead acetate solution with carbon dioxide to produce insoluble lead carbonate; and(e) decomposing the lead carbonate to form lead monoxide.
    Type: Grant
    Filed: March 3, 1980
    Date of Patent: May 26, 1981
    Assignee: NL Industries, Inc.
    Inventors: Eugene Striffler, Jr., Michael A. Kolakowski
  • Patent number: 4269810
    Abstract: In connection with the recycling of lead-acid batteries, battery muds are desulfated by adding an aqueous solution of a treating agent comprising soluble alkali metal salts or alkali metal hydroxides to crushed battery components. The treating agent reacts with sulfuric acid and lead sulfate to form an aqueous solution of alkali metal sulfates and precipitated lead compounds. Following separation of the reacted battery mud and other crushed battery components, separation of the soluble alkali metal sulfates and solids such as PbO, PbO.sub.2, and precipitated lead compounds is effected.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: May 26, 1981
    Assignee: NL Industries, Inc.
    Inventor: Michael A. Kolakowski
  • Patent number: 4220628
    Abstract: An efficient and inexpensive method for producing lead monoxide from impure lead sulfate bearing materials such as recycled battery mud is provided comprising:(a) reacting said material with an ammonium carbonate solution to convert lead sulfate to lead carbonate;(b) decomposing the lead carbonate to produce impure lead monoxide;(c) reacting said impure lead monoxide with an acidic ammonium acetate solution to form a lead acetate solution;(d) reacting ammonium hydroxide with the lead acetate solution to form lead hydroxide; and(e) dehydrating the lead hydroxide to produce lead monoxide.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: September 2, 1980
    Assignee: N L Industries, Inc.
    Inventors: Eugene Striffler, Jr., Michael A. Kolakowski