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:
May. 18, 1993
Filed:
Jun. 24, 1991
Applicant:
Inventors:
Paul Kovacs, Memphis, TN (US);
James A Davidson, Germantown, TN (US);
Assignee:
Smith & Nephew Richards, Inc., Memphis, TN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F / ; A61F / ; A61F / ; A61K / ;
U.S. Cl.
CPC ...
623 16 ; 623 18 ; 623 11 ; 427-2 ;
Abstract
Passivated implants and passivation methods that provide superior corrosion resistance and surface performance characteristics as compared to conventional nitric acid passivation are disclosed. The method uses either the spontaneous or galvanic passivation of metallic prosthetic implants in aqueous alkali salt solutions containing non-aggressive oxyanions to produce a thin and uniform passive coating on the metal implant, thereby rendering the implant more stable in the biological environment.