Patents by Inventor Leander A. Neumeier

Leander A. Neumeier 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).

  • Method for soldering aluminum and magnesium
    Patent number: 4613069
    Abstract: Aluminum, magnesium, or their alloys are soldered by means of a tin-lead system following initial application of a thin coating of nickel-copper alloy.
    Type: Grant
    Filed: January 6, 1984
    Date of Patent: September 23, 1986
    Assignee: The United States of America as represented by the Secretary of the Interior
    Inventors: Wilbert L. Falke, Agnes Y. Lee, Leander A. Neumeier
  • Recovery of metals from grinding sludges
    Patent number: 4409020
    Abstract: Metal values, such as Co, Ni, Cu and Fe, are recovered from magnet alloy grinding sludge by means of a process comprising: (1) treatment with an organic solvent to remove a major portion of sulfur and oil contaminants, (2) drying, grinding, sizing and magnetic separation to remove a major portion of grinding media contamination, (3) controlled oxidation-roasting to selectively remove residual sulfur and carbon, and (4) gaseous hydrogen reduction to deoxidize metal values.
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: October 11, 1983
    Assignee: The United States of America as represented by the Secretary of the Interior
    Inventors: James L. Holman, Jr., Leander A. Neumeier