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:
Aug. 02, 2016
Filed:
Jun. 11, 2010
Pascal Hayoz, Hofstetten, CH;
Bernd Lamatsch, Late of Riehen, CH;
Achim Lamatsch, Waldkirch, DE;
Margherita Fontana, Thalwil, CH;
Stephan Burkhardt, Gelterkinden, CH;
Laurent Michau, Rosenau, FR;
Urs Lehmann, Basel, CH;
Philippe Bugnon, Le Mouret, CH;
Pascal Hayoz, Hofstetten, CH;
Bernd Lamatsch, Late of Riehen, CH;
Margherita Fontana, Thalwil, CH;
Stephan Burkhardt, Gelterkinden, CH;
Laurent Michau, Rosenau, FR;
Urs Lehmann, Basel, CH;
Philippe Bugnon, Le Mouret, CH;
BASF SE, Ludwigshafen, DE;
Abstract
Disclosed is a composition comprising a charged particle of volume 5 nmto 50 million nmpreferably having an inorganic core of SiO, AIO, and/or TiO, or a core essentially consisting of an organic pigment and/or pigment derivative, and a counter ion which is separable from the particle and is not covalently linked to the particle, said counter ion comprising a silicon atom which is directly bound to a carbon atom. Preferably, said charged particle comprises a dye attached to said inorganic core and said counter ion comprises a (poly)siloxane moiety linked via suitable bridge members to a quaternary, positively charged, nitrogen or phosphorus atom, or to a moiety carrying an anionic functional group. Said composition may be used e.g. in the form of a homogenous dispersion in an electrophoretic display.