US 12,264,482 B2
Panel forming
Darko Pervan, Viken (SE)
Assigned to CERALOC INNOVATION AB, Viken (SE)
Filed by Ceraloc Innovation AB, Viken (SE)
Filed on Aug. 30, 2023, as Appl. No. 18/240,192.
Application 18/240,192 is a continuation of application No. 17/228,240, filed on Apr. 12, 2021, granted, now 11,781,323.
Application 17/228,240 is a continuation of application No. 16/814,074, filed on Mar. 10, 2020, granted, now 11,002,022.
Application 16/814,074 is a continuation of application No. 15/809,582, filed on Nov. 10, 2017, granted, now 10,619,356.
Application 15/809,582 is a continuation of application No. 15/398,484, filed on Jan. 4, 2017, granted, now 9,840,849.
Application 15/398,484 is a continuation of application No. 15/164,523, filed on May 25, 2016, granted, now 9,556,623.
Application 15/164,523 is a continuation of application No. 15/085,535, filed on Mar. 30, 2016, granted, now 9,482,015.
Application 15/085,535 is a continuation of application No. 14/825,719, filed on Aug. 13, 2015, granted, now 9,663,956.
Application 14/825,719 is a continuation of application No. 13/932,406, filed on Jul. 1, 2013, granted, now 9,140,010.
Claims priority of provisional application 61/667,190, filed on Jul. 2, 2012.
Prior Publication US 2024/0093507 A1, Mar. 21, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. E04F 15/00 (2006.01); B27F 1/02 (2006.01); B27N 3/04 (2006.01); B32B 3/06 (2006.01); B32B 21/02 (2006.01); E04C 2/24 (2006.01); E04F 15/02 (2006.01); E04F 15/04 (2006.01); E04F 15/10 (2006.01); B27F 1/00 (2006.01); B27F 1/04 (2006.01); B29B 13/02 (2006.01); B41J 2/03 (2006.01)
CPC E04F 15/02038 (2013.01) [B27F 1/02 (2013.01); B27N 3/04 (2013.01); B32B 3/06 (2013.01); B32B 21/02 (2013.01); E04C 2/246 (2013.01); E04F 15/02161 (2013.01); E04F 15/041 (2013.01); E04F 15/102 (2013.01); E04F 15/107 (2013.01); B27F 1/00 (2013.01); B27F 1/04 (2013.01); B29B 13/02 (2013.01); B32B 2471/00 (2013.01); B32B 2607/00 (2013.01); B41J 2/03 (2013.01); E04F 2201/0161 (2013.01); E04F 2201/023 (2013.01); E04F 2203/04 (2013.01); E04F 2203/08 (2013.01); Y10T 428/24777 (2015.01)] 20 Claims
OG exemplary drawing
 
1. Building panels, each building panel having a surface layer and a core,
wherein the core and the surface layer comprise a thermoplastic material,
wherein at least three core grooves are provided in a rear side of the building panels with an opening towards the rear side, and
wherein an area of the rear side is less than about 80% of an area of the surface layer,
wherein at least two of the core grooves have different groove depths.