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:
Mar. 18, 2014
Filed:
Jan. 07, 2010
Margherita Fontana, Thalwil, CH;
Marian Lanz, Röschenz, CH;
Frank Oliver Heinrich Pirrung, Grünstadt, DE;
Andreas Gernandt, Ludwigshafen, DE;
Dario Perera, Basel, CH;
Thomas Ruch, Delémont, CH;
Christoph Krebs, Pratteln, CH;
Thomas Eichenberger, Basel, CH;
Achim Lamatsch, Waldkirch, DE;
Margherita Fontana, Thalwil, CH;
Marian Lanz, Röschenz, CH;
Frank Oliver Heinrich Pirrung, Grünstadt, DE;
Andreas Gernandt, Ludwigshafen, DE;
Dario Perera, Basel, CH;
Thomas Ruch, Delémont, CH;
Christoph Krebs, Pratteln, CH;
Thomas Eichenberger, Basel, CH;
Bernd Lamatsch, Riehen, CH;
BASF SE Ludwigshafen, , DE;
Abstract
Described is a pigment dispersion which is useful for electrophoretic displays comprising α) a bis-oxodihydro-indolylene-benzodifuranone colorant of the Formula (I) wherein the substituents are defined as in claim, β) a specific polymeric dispersant, and γ) a solvent which is suitable for dispersions used in electrophoretic displays. Also described are novel colourants and dispersants.