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. 25, 2006
Filed:
Mar. 28, 2002
Applicants:
Matthias Kuntz, Seeheim-Jugenheim, DE;
Robert Hammond-smith, Fordingbridge, GB;
Rodney Riddle, Dorset, GB;
John Patrick, Dorset, GB;
Donald Graham, Dorst, GB;
Inventors:
Matthias Kuntz, Seeheim-Jugenheim, DE;
Robert Hammond-Smith, Fordingbridge, GB;
Rodney Riddle, Dorset, GB;
John Patrick, Dorset, GB;
Donald Graham, Dorst, GB;
Assignee:
Merck Patent GmbH, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
C09K 19/52 (2006.01); G02F 1/13363 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a birefringent marking comprising a liquid crystal material. The invention further relates to method of providing such a birefringent marking and to the use of the birefringent marking for decorative or security applications.