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. 18, 2006
Filed:
May. 02, 2002
Peer Kirsch, Darmstadt, DE;
Andreas Taugerbeck, Darmstadt, DE;
Detlef Pauluth, Ober-Ramstadt, DE;
Joachim Krause, Dieburg, DE;
Kazuaki Tarumi, Seeheim, DE;
Georg Lüssem, Ober-Ramstadt, DE;
Peer Kirsch, Darmstadt, DE;
Andreas Taugerbeck, Darmstadt, DE;
Detlef Pauluth, Ober-Ramstadt, DE;
Joachim Krause, Dieburg, DE;
Kazuaki Tarumi, Seeheim, DE;
Georg Lüssem, Ober-Ramstadt, DE;
Merck Patent GmbH, Darmstadt, DE;
Abstract
The invention relates to CFO-bridged cyclohexane derivatives, in particular compounds of formula (I), R1-(-A1-Z1-)k1-Q-CF2O-A2-(-Z3-A3-)K3-R2, wherein Q represents group (a); W, Wrepresent —CH— and/or —O— independendy from each other, X, X, X, Xrepresent H, F, —CH—CHF—CHF and/or —CFindependently from each other, provided that at least one substituent X, X, Xand/or Xdoes not represent H, Zrepresents a simple bond, —CH—CH— or —CF—CF—, m represents 0 or 1 and R, R, A, A, A, Z, Z, k1 and k3 have the meaning cited in the description. The invention further relates to liquid crystal substances such as optical and electro-optical display elements.