Patents by Inventor John William Leikhim

John William Leikhim 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: 4116849
    Abstract: Highly alkaline thickened aqueous liquid hypohalite compositions, preferably thickened with a clay, preferably thixotropic, and preferably containing an alkali metal silicate can be used in a process for cleaning kitchen utensils having baked-on soils comprising the steps of treating a soiled utensil surface with the thickened alkaline hypohalite composition and then covering the treated soiled utensil surface with an excess of water at a temperature of more than about 100.degree. F. The preferred compositions, free of abrasives, containing clay and an alkali metal silicate are particularly stable; provide good corrosion protection to metals, and are milder to skin than normal alkaline hypohalite compositions.
    Type: Grant
    Filed: March 14, 1977
    Date of Patent: September 26, 1978
    Assignee: The Procter & Gamble Company
    Inventor: John William Leikhim
  • Patent number: 4116851
    Abstract: Highly alkaline thickened aqueous liquid hypohalite compositions containing either mineral oil, water insoluble saturated fatty acid esters, water insoluble ethers, and mixtures thereof, preferably thickened with a clay, preferably thixotropic, and containing an alkali metal silicate which can be used in a process for cleaning kitchen utensils having baked-on soils comprising the steps of treating a soiled utensil surface with the thickened alkaline hypohalite composition and then covering the treated soiled utensil surface with an excess of water at a temperature of more than about 100.degree. F. The compositions containing clay, an alkali metal silicate and the mineral oil, water insoluble ester and ethers, etc. are particularly stable, provide good corrosion protection to metals, are milder to skin than the same alkaline hypohalite compositions without the mineral oil, etc.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: September 26, 1978
    Assignee: The Procter & Gamble Company
    Inventors: Lewis Allen Rupe, Lyle Brown Tuthill, John William Leikhim