Patents by Inventor Didier Lange

Didier Lange 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).

  • Razor head with an anti-friction element having a sole fixed to the razor head by welding
    Patent number: 6568082
    Abstract: A razor head is provided with an anti-friction element firmly secured to the razor head. The anti-friction element is formed of a sole and an upper layer. At least the upper layer contains a water-soluble polymer. The upper layer is secured to the sole such as by bonding, molding, coextrusion, overmolding, or twin-shot injection molding. The sole then is secured to the razor head by welding.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: May 27, 2003
    Assignee: Societe Bic
    Inventors: Michaël Pouettre, Didier Lange
  • Razor head with an anti-friction element having a sole fixed to the razor head by welding
    Publication number: 20020144403
    Abstract: A razor head is provided with an anti-friction element firmly secured to the razor head. The anti-friction element is formed of a sole and an upper layer. At least the upper layer contains a water-soluble polymer. The upper layer is secured to the sole such as by bonding, molding, coextrusion, overmolding, or twin-shot injection molding. The sole then is secured to the razor head by welding.
    Type: Application
    Filed: November 13, 2001
    Publication date: October 10, 2002
    Inventors: Michael Pouettre, Didier Lange
  • Process for manufacturing pencil by tri-extrusion and the produced pencil having an intermediate protective casing
    Patent number: 5244297
    Abstract: According to the invention, the writing or coloring pencil is obtained by tri-extrusion of three thermoplastic materials forming the lead material, the expanded wood material and an intermediate protective layer, containing no expanding agent, which is compatible with the lead material and the wood material and has a melting point which is equal to or higher than the melting points of the lead material and the wood material. The three co-extruded materials all contain in particular the same basic component, such as for example a polystyrene-methacrylate copolymer. The protective layer can be of a different color from the other two layers. The writing or coloring pencil with protective casing between the lead and the expanded wood, all three being in thermoplastic material, is, in particular a pencil with soft or extra-soft lead.
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: September 14, 1993
    Assignee: Conte S.A.
    Inventors: Jacques Bachelet, Philippe Chavatte, Guy Chochoy, Jose Duez, Claude Fouble, Didier Lange