US 12,252,799 B2
Anodic oxide coating with high temperature tolerance
James A. Curran, Sunnyvale, CA (US); Kar-Wai Hon, Taipei (TW); Todd S. Mintz, San Jose, CA (US); and Isabel Yang, San Jose, CA (US)
Assigned to APPLE INC., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on May 12, 2023, as Appl. No. 18/316,530.
Claims priority of provisional application 63/479,137, filed on Jan. 9, 2023.
Prior Publication US 2024/0229288 A1, Jul. 11, 2024
Int. Cl. H05K 5/04 (2006.01); C23C 28/00 (2006.01); C25D 11/08 (2006.01); C25D 11/10 (2006.01); C25D 11/24 (2006.01)
CPC C25D 11/246 (2013.01) [C23C 28/00 (2013.01); C23C 28/345 (2013.01); C25D 11/08 (2013.01); C25D 11/10 (2013.01); H05K 5/04 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An enclosure for an electronic device, the enclosure comprising:
a titanium-aluminum clad substrate; and
an anodic oxide coating formed on the titanium-aluminum clad substrate, the anodic oxide coating comprising a porosity between about 21% and about 31% and a sulfur content between about 13.5% and about 14.5%.