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:
Jan. 22, 2019
Filed:
Mar. 12, 2015
Applicant:
Dentsply Sirona, Inc., York, PA (US);
Inventors:
Derek E. Heath, Vero Beach, FL (US);
Steven J. A. Treadway, Jonesborough, TN (US);
Assignee:
DENTSPLY SIRONA Inc., York, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 1/46 (2006.01); C22F 1/10 (2006.01); A61C 5/02 (2006.01); C23C 8/48 (2006.01); C22F 1/00 (2006.01);
U.S. Cl.
CPC ...
A61C 5/023 (2013.01); C21D 1/46 (2013.01); C22F 1/006 (2013.01); C22F 1/10 (2013.01); C23C 8/48 (2013.01);
Abstract
Methods for modifying a physical characteristic of finished endodontic instruments made from one or more superelastic alloys is described which include heat treating one or more finished endodontic instruments in a salt bath for a specific time (e.g., from about four hours to about six hours), at a specified temperature (e.g., from about 475° C. to about 550° C.), and preferably at a specified pH range.