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. 26, 2001
Filed:
Mar. 05, 1998
Applicant:
Inventors:
Petri Silenius, Kirkniemi, FI;
Markku Leskela, Lohja as, FI;
Assignee:
Metsa-Serla, , FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 1/770 ;
U.S. Cl.
CPC ...
D21H 1/770 ;
Abstract
The invention relates to a filled used in paper manufacture and mainly consisting of calcium carbonate, and to a procedure for producing the filler. The filler consists of porous aggregates formed by precipitated calcium carbonate particles. In the procedure, calcium carbonate is precipitated.