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:
Jan. 24, 1995
Filed:
Sep. 04, 1991
Applicant:
Inventors:
Thomas Geelhaar, Mainz, DE;
Bernhard Rieger, Kanagawa, JP;
Volker Reiffenrath, Rossdorf, DE;
Ekkehard Bartmann, Erzhausen, DE;
David Coates, Dorset, GB;
Assignee:
Merck Patent Gesellschaft mit beschrankter Haftung, Darmstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; C07C / ; G02F / ;
U.S. Cl.
CPC ...
25229963 ; 25229901 ; 570127 ; 570186 ; 359103 ; 359106 ; 359 93 ;
Abstract
The invention relates to a matrix liquid-crystal display based on the principle of electrically controlled birefringence, having