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:
Sep. 06, 2005
Filed:
Mar. 12, 1999
Applicant:
Petri Silenius, Lohja as., FI;
Inventor:
Petri Silenius, Lohja as., FI;
Assignee:
Metsä-Serla Oyj, Espoo, FI;
Primary Examiner:
Int. Cl.
CPC ...
B32B005/16 ; B32B029/00 ; D21H011/00 ;
U.S. Cl.
CPC ...
Abstract
The present invention relates to the use of calcium oxalate as a filler or pigment. In particular described herein is a method of reducing the combustion residue of coated paper or cardboard products by replacing at least a part of the conventional pigments and filler needed for achieving predetermined optical properties with calcium oxalate.