Patents by Inventor Louis N. Kravetz

Louis N. Kravetz 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).

  • Activated bleaching process and compositions therefor
    Patent number: 4086175
    Abstract: A process for the activation of peroxide-based bleaches comprises conjointly incorporating into an aqueous medium a peroxide-based bleach, sufficient buffering agent to maintain the aqueous medium under alkaline conditions, cyanamide or a metal cyanamide as a peroxide activator, and magnesium, which acts in conjunction with cyanamide or metal cyanamide to further activate the peroxide-based bleach. Stable concentrated liquid or solid peroxide-based bleach compositions containing cyanamide or a metal cyanamide activator and a magnesium compound are also disclosed.
    Type: Grant
    Filed: November 22, 1976
    Date of Patent: April 25, 1978
    Assignee: Shell Oil Company
    Inventors: Louis N. Kravetz, Hans E. Kubitschek