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:
Jun. 01, 2021
Filed:
Mar. 20, 2018
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Hoishun Li, San Jose, CA (US);
Ethan E. Currens, San Francisco, CA (US);
Weiming Huang, State College, PA (US);
James A. Wright, Los Gatos, CA (US);
Assignee:
Apple Inc., Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 8/26 (2006.01); C23C 8/80 (2006.01); C22C 38/44 (2006.01); C22C 38/42 (2006.01); C22C 38/50 (2006.01); C22C 38/00 (2006.01); C22C 38/48 (2006.01); C22C 38/06 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); C22C 38/46 (2006.01); C21D 1/74 (2006.01); C21D 6/00 (2006.01); C23C 8/02 (2006.01); C21D 1/06 (2006.01); C21D 8/02 (2006.01);
U.S. Cl.
CPC ...
C23C 8/26 (2013.01); C21D 1/74 (2013.01); C21D 6/004 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C23C 8/02 (2013.01); C23C 8/80 (2013.01); C21D 1/06 (2013.01); C21D 8/0257 (2013.01); C21D 2211/001 (2013.01); C21D 2211/005 (2013.01); C21D 2261/00 (2013.01);
Abstract
The disclosure provides methods of making iron-based alloys, as well as resulting alloys. An iron-based alloy containing a small amount of nickel (e.g., 0.5 to 2.0 wt %) is annealed and machined. The alloy is sufficiently ductile to reduce the likelihood of cracking, while not sufficiently high to result in a hardened alloy. After the alloy is shaped, the alloy is hardened by nitriding.