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:
Jun. 06, 2000
Filed:
Apr. 28, 1998
Applicant:
Inventors:
Horst Leigeber, Oberhaching, DE;
Eckhard Hanelt, Geltendorf, DE;
Franz-Heinrich Kreuzer, Martinsried, DE;
Assignee:
Consortium fur elektrochemische Industrie GmbH, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V / ; C09K / ;
U.S. Cl.
CPC ...
252585 ; 25229901 ; 428-1 ;
Abstract
The invention relates to a process for the preparation of three-dimensionally crosslinked polymeric materials having a broad cholesteric reflection band, which comprises bringing polymeric materials having cholesteric properties and an extractable material content into contact with a solvent or solvent mixture.