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:
Jul. 29, 2025
Filed:
Sep. 09, 2022
Applicants:
Swagelok Company, Solon, OH (US);
Case Western Reserve University, Cleveland, OH (US);
Inventors:
Peter C. Williams, Cleveland Heights, OH (US);
Steven V. Marx, University Heights, OH (US);
Frank Ernst, Cleveland Heights, OH (US);
Anna V. Agaponova, Beachwood, OH (US);
Assignee:
SWAGELOK COMPANY, Solon, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 8/02 (2006.01); C23C 8/26 (2006.01); C23C 8/32 (2006.01);
U.S. Cl.
CPC ...
C23C 8/02 (2013.01); C23C 8/26 (2013.01); C23C 8/32 (2013.01);
Abstract
A workpiece made from a self passivating metal and having one or more surface regions defining a Beilby layer as a result of a previous metal shaping operation is activated for subsequent low temperature gas hardening by exposing the workpiece to the vapors produced by heating an oxygen-free nitrogen halide salt.