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:
May. 02, 2017
Filed:
May. 15, 2014
Applicant:
Wieland-werke Ag, Ulm, DE;
Inventors:
Assignee:
Wieland-Werke AG, Ulm, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 9/04 (2006.01); C22F 1/08 (2006.01); B43K 1/08 (2006.01);
U.S. Cl.
CPC ...
C22C 9/04 (2013.01); B43K 1/082 (2013.01); C22F 1/08 (2013.01);
Abstract
A refill for a ball-point pen has an ink cartridge and a ball, the ball being arranged in a writing tip provided at the front end of the ink cartridge, wherein at least the writing tip of the ink cartridge is made solely of a copper-zinc alloy of the following composition (wt. %): 28.0 to 36.0% Zn, 0.5 to 1.5% Si, 1.5 to 2.5% Mn, 0.2 to 1.0% Ni, 0.5 to 1.5% Al, 0.1 to 1.0% Fe, optionally also up to a maximum of 0.1% Pb, optionally also up to a maximum of 0.2% Sn, optionally also up to a maximum of 0.1% P, optionally also up to a maximum of 0.08% S, the rest being Cu and inevitable impurities, with mixed silicides containing iron, nickel and manganese embedded in the matrix.