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:
Apr. 26, 2005
Filed:
Nov. 19, 2003
Applicants:
Anke Müller, Creussen, DE;
Manuela Geis, Nürnberg, DE;
Stefan Engel, Nürnberg, DE;
Inventors:
Assignee:
J.S. Staedtler GmbH & Co., Nürnberg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D011/00 ;
U.S. Cl.
CPC ...
Abstract
An ink base for producing pigmented inks having a water base contains a drying retarder and a pH adjusting agent. The drying retarder contains at least diethylene glycol, 1,6-hexane diol, and pentaerythritol. The pH adjusting agent (PH) contains at least one amine. The ink base contains at least 30.0-95.5% by wt. diethylene glycol; 3.0-40.0% by wt. 1,6-hexane diol; 0.01-3.0% by wt. pentaerythritol; and 1.5-15.0% by wt. amine(s).