Patents by Inventor Jean-Paul Duboeuf

Jean-Paul Duboeuf 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).

  • Cellulosic materials rendered transparent
    Patent number: 4513056
    Abstract: The invention relates to cellulosic supports rendered wholly or partly transparent by a process of impregnation. One of the characteristics of the impregnation compositions proposed is its aptitude to migrate very rapidly to the heart of the cellulosic supports. The invention is applicable to drawing, reproduction, windows for envelopes, lampshades, creation of watermarks by a photogravure process.
    Type: Grant
    Filed: March 23, 1983
    Date of Patent: April 23, 1985
    Assignee: Arjomari-Prioux
    Inventors: Michel Vernois, Jean-Paul Duboeuf