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:
Aug. 31, 2021
Filed:
Dec. 20, 2016
Applicant:
Knauf Gips KG, Iphofen, DE;
Inventors:
Dominik Herfurth, Iphofen, DE;
Felix Friedel, Adelsdorf, DE;
Assignee:
Knauf Gips KG, Iphofen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 7/022 (2019.01); B32B 7/08 (2019.01); B32B 13/08 (2006.01); E04C 2/04 (2006.01); C04B 28/14 (2006.01); B32B 7/12 (2006.01); C04B 111/00 (2006.01);
U.S. Cl.
CPC ...
C04B 28/14 (2013.01); B32B 7/022 (2019.01); B32B 7/08 (2013.01); B32B 7/12 (2013.01); B32B 13/08 (2013.01); E04C 2/043 (2013.01); B32B 2307/536 (2013.01); B32B 2307/72 (2013.01); B32B 2419/04 (2013.01); C04B 2111/0062 (2013.01); C04B 2111/00405 (2013.01);
Abstract
The invention concerns a gypsum plasterboard () comprising at least an upper gypsum layer () having a first density, first hardness and first thickness and a lower gypsum layer () having a second density, a second hardness and a second thickness. The first density is lower than the second density and/or the first hardness is lower than the second hardness, and the first thickness is lower than the second thickness. The plasterboard according to the invention are heavy or dense plasterboards with an enhanced fixing ability.