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:
Sep. 07, 1999
Filed:
Mar. 16, 1998
Applicant:
Inventors:
John F Longwell, Elmira, NY (US);
Donald N Terwilliger, Elmira, NY (US);
Assignee:
Hardinge Inc., Elmira, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ; C23C / ; C23C / ;
U.S. Cl.
CPC ...
148228 ; 148217 ;
Abstract
A method of surface treating a metallic machine tool element includes heating the element prior to insertion of the metal element into a nitrating salt bath for the purpose of both hardening the element and improving the resilience of portions required to be flexed in use.