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. 28, 2009
Filed:
Dec. 08, 2006
Robert Harding, Hants, GB;
Matthew Francis, Walton, GB;
Louise Diane Farrand, Dorset, GB;
Kevin Adlem, Bournemouth, GB;
Robert Harding, Hants, GB;
Matthew Francis, Walton, GB;
Louise Diane Farrand, Dorset, GB;
Kevin Adlem, Bournemouth, GB;
Merck Patent GmbH, Darmstadt, DE;
Abstract
The invention reports on the use of multi-reactive polymerizable surfactants in mixtures of polymerizable mesogenic materials. The polymerizable surfactants are readily polymerized into the liquid crystal film and build a protective topcoat layer. The invention also relates to a method of producing polymeric optical films with improved stability by using the surfactants. Uses of these films are given for various applications including security applications and displays.