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:
Oct. 05, 2021
Filed:
Mar. 26, 2018
Applicant:
Kemira Oyj, Helsinki, FI;
Inventors:
Elisabeth Lackinger-Csarmann, Krems, AT;
Johannes Fallmann, Theiß, AT;
Alexander Wahl, Vienna, AU;
Thomas Schwind, Vienna, AT;
Jürgen Sartori, Krems, AT;
Samuel Okoli, Krems, AT;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 21/16 (2006.01); D21H 11/14 (2006.01); D21H 17/02 (2006.01); D21H 17/15 (2006.01); D21H 17/67 (2006.01); D21H 17/00 (2006.01); D21H 27/10 (2006.01); D21H 27/22 (2006.01);
U.S. Cl.
CPC ...
D21H 21/16 (2013.01); D21H 11/14 (2013.01); D21H 17/02 (2013.01); D21H 17/15 (2013.01); D21H 17/675 (2013.01); D21H 17/74 (2013.01); D21H 27/10 (2013.01); D21H 27/22 (2013.01);
Abstract
A manufacturing method of a paper, board or the like having a grammage in a range of 125-600 g/m, preferably 150-210 g/m, including adding a paper sizing agent including maleated vegetable oil and an alkenyl succinic anhydride (ASA) to a fibre stock including at least 80 weight-% of recycled fibre material and having calcium concentration of at least 500 mg/l, expressed as CaO.