ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,799, issued on March 18, was assigned to Apple Inc. (Cupertino, Calif.).
"Anodic oxide coating with high temperature tolerance" was invented by James A. Curran (Sunnyvale, Calif.), Kar-Wai Hon (Taipei, Taiwan), Todd S. Mintz (San Jose, Calif.) and Isabel Yang (San Jose, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An enclosure for an electronic device includes a titanium-aluminum clad substrate and an anodic oxide coating disposed on the titanium-aluminum clad substrate. The anodic oxide coating includes a density of between about 2.1 g/cm3 and about 2.4 g/cm3 or includes a maximum porosity between about 21% and about 31% and can be expose...