公开(公告)号：US11072722B2

公开(公告)日：2021-07-27

申请号：US16604220

申请日：2018-04-09

Applicant: SOCIETE BIC

Inventor： Julien Gouerec ,  Frédéric Claptien ,  Philippe Lefebvre ,  Christelle Debrauwer

IPC: C09D13/00 ,  B43K19/02 ,  B43K29/02 ,  B43K19/18 ,  C08K3/04 ,  C08K7/22

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.

公开(公告)号：US10774232B2

公开(公告)日：2020-09-15

申请号：US16075807

申请日：2017-02-02

Applicant: SOCIETE BIC

Inventor： Julien Gouerec ,  Alice Danel ,  Philippe Lefebvre

IPC: C09D13/00 ,  B43K19/00 ,  C08K3/013 ,  C08K3/34 ,  C08K5/00 ,  C08K5/06 ,  C08K5/11 ,  C08L91/06

Abstract: A wax-based coloring crayon for a porous surface and for a non-porous surface includes at least one wax, an ethoxylated fatty alcohol, stearin, a filler, at least one pigment, and optionally an additive.