Patents by Inventor Jacques Scheffer

Jacques Scheffer 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).

  • Fire-resistant print medium
    Publication number: 20010041247
    Abstract: A fire-resistant print medium comprises: backing forming the structure of the medium; and a coating covering the backing and used for printing; wherein:
    Type: Application
    Filed: April 12, 2001
    Publication date: November 15, 2001
    Inventors: Jacques Scheffer, David Jean-Louis Lesueur
  • Process for recycling articles based on vinyl chloride polymers
    Patent number: 6172125
    Abstract: Process for recycling an article based on at least one vinyl chloride polymer, in which: (a) the article is shredded into fragments having an average dimension of 1 cm to 50 cm, should it exceed these dimensions; (b) the fragments of the article, which are substantially dry, are brought into contact with a substantially anhydrous solvent capable of dissolving the vinyl chloride polymer, forming an azeotrope with water; (c) the polymer dissolved in the solvent is precipitated by injecting steam in the solution thus obtained, which moreover leads to the stripping of the water-solvent azeotrope and so leaves behind a mixture essentially consisting of water and of solid polymer particles; (d) the polymer particles are recovered.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: January 9, 2001
    Assignee: Solvay S.A. (Societe Anonyme)
    Inventors: Bernard Vandenhende, Jean-Marie Yernaux, Jacques Scheffer