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:
Feb. 13, 2001
Filed:
Jan. 31, 2000
Bertil Ahlinder, Jönköping, SE;
Stora Kopparbergs Bergslags AB, Falun, SE;
Abstract
A method and a color mixture for shading paper, and a shaded paper that comprises or consists of one or more layers made of the same or different pulps, which paper is intended to be used in connection with foodstuffs. The pulp or paper layer is treated with a color mixture of at least two optically cooperating pigments that are approved for foodstuffs, one of which is quinacridone red with the FDA registration details C.I. pigment violet 19, C.I. No. 73900 (Code of Federal Regulations, Food and Drugs, Title 21, Part 170-199), and constituting the primary component of the color mixture, in order to obtain a shaded paper with a value for the color coordinate b* that is between 0 and 3. The primary component may comprise between about 75-85 per cent of the color mixture with the rest at least one blue pigment, such as phthalocyanine blue.