Patents by Inventor Frédéric CLAPTIEN

Frédéric CLAPTIEN 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).

  • Pencil lead
    Patent number: 11072722
    Abstract: A pencil lead and a pencil containing the pencil lead wherein the pencil lead is polymer-based, extrudable, non-expanded, non-calcined and comprises graphite, of which 25% to 100% by weight or 50% to 100% by weight of the graphite, in relation to the total weight of the graphite, is expanded graphite.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: July 27, 2021
    Assignee: SOCIETE BIC
    Inventors: Julien Gouerec, Frédéric Claptien, Philippe Lefebvre, Christelle Debrauwer
  • PENCIL LEAD
    Publication number: 20200115581
    Abstract: A pencil lead and a pencil containing the pencil lead wherein the pencil lead is polymer-based, extrudable, non-expanded, non-calcined and comprises graphite, of which 25% to 100% by weight or 50% to 100% by weight of the graphite, in relation to the total weight of the graphite, is expanded graphite.
    Type: Application
    Filed: April 9, 2018
    Publication date: April 16, 2020
    Inventors: Julien GOUEREC, Frédéric CLAPTIEN, Philippe LEFEBVRE, Christelle DEBRAUWER
  • Paper pencil lead
    Patent number: 10308063
    Abstract: The present invention concerns an extrudable, unexpanded paper pencil lead, comprising, by weight relative to the total weight of the lead, between 40 and 60%, and advantageously between 44 and 50%, of graphite; between 15 and 40%, and advantageously between 20 and 35%, of a polyolefin; between 5 and 15%, and advantageously between 6 and 10%, of a colorless mineral filler; between 5 and 20%, and advantageously between 5 and 15%, of carbon black coated with or mixed with a polyolefin wax or a polyolefin; between 0 and 16%, and advantageously between 5 and 15%, of an additive. It further concerns the paper pencil comprising a lead according to the invention.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: June 4, 2019
    Assignee: Conte
    Inventors: Frédéric Claptien, Julien Gouerec, Philippe Lefebvre
  • PAPER PENCIL LEAD
    Publication number: 20180001694
    Abstract: The present invention concerns an extrudable, unexpanded paper pencil lead, comprising, by weight relative to the total weight of the lead, between 40 and 60%, and advantageously between 44 and 50%, of graphite; between 15 and 40%, and advantageously between 20 and 35%, of a polyolefin; between 5 and 15%, and advantageously between 6 and 10%, of a colourless mineral filler; between 5 and 20%, and advantageously between 5 and 15%, of carbon black coated with or mixed with a polyolefin wax or a polyolefin; between 0 and 16%, and advantageously between 5 and 15%, of an additive. It further concerns the paper pencil comprising a lead according to the invention.
    Type: Application
    Filed: December 14, 2015
    Publication date: January 4, 2018
    Inventors: Frédéric CLAPTIEN, Julien GOUEREC, Philippe LEFEBVRE