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. 10, 2014
Filed:
Jul. 11, 2009
Andreas Thies, Effeltrich, DE;
Nikolas Lins, Schweig Behringersdorf, DE;
Christine Delapierre-kohl, Herzogenaurach, DE;
Johannes Herbolsheimer, Obernzenn, DE;
Martin Jakob, Fürth, DE;
Harald Lang, Sugenheim, DE;
Simone Arthen, Nürnberg, DE;
Andreas Thies, Effeltrich, DE;
Nikolas Lins, Schweig Behringersdorf, DE;
Christine Delapierre-Kohl, Herzogenaurach, DE;
Johannes Herbolsheimer, Obernzenn, DE;
Martin Jakob, Fürth, DE;
Harald Lang, Sugenheim, DE;
Simone Arthen, Nürnberg, DE;
J.S. Staedtler GmbH & Co. KG, Nürnberg, DE;
Abstract
A pencil that includes a polymer-bonded lead, a polymerbonded wood substitute material that includes an organic filler and covers or surrounds the lead along its length, and an adhesion promoter layer disposed between the lead and the wood substitute material. The lead and the wood substitute material each have a polymer. The polymer in the lead being incompatible with the polymer in the wood substitute material so that the polymer of the lead and the polymer of the wood substitute material do not create any connection with one another. The adhesion promoter layer is connected to the polymer in the lead and to the polymer in the wood substitute material so that the adhesion promoter layer forms a connection with the polymer in the lead and with the polymer of the substitute material. The organic filler is formed by particles having a maximum particle size of 250 μm.