US 11,930,956 B2
Cookware having a graphite core
William A. Groll, McMurray, PA (US); and Jean Murray Stewart, Moon Township, PA (US)
Assigned to All-Clad Metalcrafters, L.L.C., Canonsburg, PA (US)
Filed by All-Clad Metalcrafters, L.L.C., Canonsburg, PA (US)
Filed on Dec. 13, 2019, as Appl. No. 16/714,120.
Prior Publication US 2021/0177195 A1, Jun. 17, 2021
Int. Cl. A47J 36/04 (2006.01); B32B 9/00 (2006.01); B32B 9/04 (2006.01); B32B 15/20 (2006.01)
CPC A47J 36/04 (2013.01) [B32B 9/007 (2013.01); B32B 15/20 (2013.01); B32B 9/041 (2013.01)] 16 Claims
OG exemplary drawing
 
1. Cookware made from a bonded multi-layer blank assembly, the cookware comprising:
a first metal layer;
a second metal layer having a cavity with a plurality of spaced-apart posts protruding from a bottom surface of the cavity, the second metal layer made of aluminum;
a perforated graphite layer having a thickness of at least 0.010 in. (0.254 mm) and a plurality of spaced-apart holes formed therethrough; and
a third metal layer,
wherein the perforated graphite layer is positioned within the cavity of the second metal layer such that the plurality of spaced-apart posts extend through the plurality of spaced-apart holes,
wherein the second metal layer is metallurgically bonded to the first metal layer at least via the plurality of spaced-apart posts, and
wherein the third metal layer is metallurgically bonded to a planar side of the second metal layer opposite the cavity.