Patents by Inventor Donald M. Leiendecker

Donald M. Leiendecker 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).

  • MgO Dispensions
    Patent number: 4293429
    Abstract: This invention relates to a stable, fluid magnesium oxide-containing dispersion prepared by the thermal treatment of MgO powder in a non-volatile fluid in the presence of a stoichiometric or lesser amount of a carboxylic acid as illustrated by acetic acid.
    Type: Grant
    Filed: January 16, 1980
    Date of Patent: October 6, 1981
    Assignee: Petrolite Corporation
    Inventors: William J. Cheng, David B. Guthrie, Donald M. Leiendecker
  • Oil solutions and/or dispersions of hydrated chromium oxides
    Patent number: 4263151
    Abstract: This invention relates to a process of treating hydrated chromium oxides with aqueous base(s) in the presence of dispersing agent(s) to form upon dehydration a virtually sediment-free oil solution and/or dispersion of hydrated chromium oxide in amounts up to about 20% chromium content. The product formed is a stable, bright, fluid oil-soluble and/or oil-dispersible hydrated chromium oxide upon filtration or centrifugation to remove minimal sediment.
    Type: Grant
    Filed: August 3, 1979
    Date of Patent: April 21, 1981
    Assignee: Petrolite Corporation
    Inventors: William J. Cheng, Donald M. Leiendecker
  • Clear, bright oil-soluble aluminum-containing compositions
    Patent number: 4123231
    Abstract: This invention relates to the preparation of clear, bright oil-soluble aluminum-containing compositions of high aluminum content; to the resulting products; and to the use of such products; for example, as fuel additives such as additives employed in turbine fuels as corrosion inhibitors and other uses.
    Type: Grant
    Filed: February 4, 1977
    Date of Patent: October 31, 1978
    Assignee: Petrolite Corporation
    Inventors: David B. Guthrie, Donald M. Leiendecker