The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2019
Filed:
Dec. 14, 2015
Applicant:
Conte, Boulogne-sur-Mer, FR;
Inventors:
Julien Gouerec, La Capelle-les-Boulogne, FR;
Philippe Lefebvre, Wimereux, FR;
Assignee:
CONTE, Boulogne-sur-Mer, FR;
Primary Examiner:
Int. Cl.
CPC ...
B43K 19/02 (2006.01); C09D 13/00 (2006.01); B43K 19/16 (2006.01); B43K 19/18 (2006.01);
U.S. Cl.
CPC ...
C09D 13/00 (2013.01); B43K 19/02 (2013.01); B43K 19/16 (2013.01); B43K 19/18 (2013.01);
Abstract
The present invention thus relates to a writing or color pencil comprising the following 3 layers obtained by coextrusion a polyolefin-based non-expanded lead, a non-expanded protective intermediate layer surrounding the lead and comprising a mixture of polystyrene and EVA, and an expanded synthetic wood material based on a styrene polymer surrounding the protective intermediate layer, the protective intermediate layer thickness/lead radius ratio being between 0.05 and 0.17, advantageously between 0.07 and 0.15.