Patents by Inventor Jean P. Lepesant

Jean P. Lepesant 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).

  • High stability printing liquid, intended more particularly for printing by ink jet
    Patent number: 4409039
    Abstract: The invention relates to a high stability printing liquid, intended more particularly for printing by ink jet.The ink is in the state of a micro-emulsion formed by a dispersing phase containing a group of inter-compatible constituents and a dispersed phase containing a second group of inter-compatible constituents, the constituents of the first and second groups being incompatible with one another. These two phases are separated by an interfacial liquid containing surfactant molecules in such a way that the dispersed phase is in the form of globules of 500 to 1000 Angstrom.The invention is more particularly applicable to printing by ink jet.
    Type: Grant
    Filed: March 18, 1981
    Date of Patent: October 11, 1983
    Assignee: Societe IMAJE
    Inventors: Jean P. Lepesant, Georges Tantot