Patents by Inventor Jean R. Levavasseur

Jean R. Levavasseur 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).

  • Process for marking and/or destroying valuable documents in particular and device for making use of it
    Patent number: 4712489
    Abstract: The invention relates to a physicochemical process for marking and/or destroying valuable documents confined in an enclosure known as a safety enclosure for their conveyance and for their storage, and to the device for making use of it.This invention applies to the conveyance or to the safe storage of documents whether wrapped or otherwise, whose purpose must be voided definitely in the event of theft.
    Type: Grant
    Filed: December 13, 1985
    Date of Patent: December 15, 1987
    Assignee: Axytel
    Inventor: Jean R. Levavasseur