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. 21, 1998
Filed:
Nov. 14, 1996
Applicant:
Inventors:
Timothy Sardelis, Somerset, NJ (US);
Douglas Warren Ackerman, Gainesville, GA (US);
William McJames, Belle Mead, NJ (US);
Assignee:
Ethicon, Inc., Somerville, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ; C21D / ; C21D / ;
U.S. Cl.
CPC ...
148607 ; 606222 ; 164-5 ;
Abstract
A method of heat treating and cleaning maraging or precipitation hardening stainless steel surgical needles is disclosed. The method comprises exposing the surgical needles to a partial vacuum at a temperature less than the aging temperature to remove volatile surface contaminants. Then the needles are heat treated in an argon gas environment at a pressure equal to or greater than 1.0 atmosphere.