Patents by Inventor Leonard Laskin

Leonard Laskin 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).

  • Electrostatic copy paper containing manganous salt
    Patent number: 3930854
    Abstract: Print contrast in zinc oxide-coated electrostatic copy paper is improved by the incorporation of small quantities of manganous chloride or manganous bromide.
    Type: Grant
    Filed: July 3, 1974
    Date of Patent: January 6, 1976
    Assignee: DeSoto, Inc.
    Inventors: Edgar L. Jones, Leonard Laskin, Phillip E. Sokol