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. 19, 1994
Filed:
Aug. 13, 1990
Timothy E Taylor, Huntsville, AL (US);
Clyde Riley, Huntsville, AL (US);
William R Lacefield, Jr, Birmingham, AL (US);
Harold D Coble, Huntsville, AL (US);
George W Maybee, Huntsville, AL (US);
McDonnell Douglas Corporation, Long Beach, CA (US);
Abstract
A metal substrate, e.g. titanium, having a calcium phosphate coating, particularly hydroxylapatite, and containing a metal such as cobalt, codeposited on the substrate by electrolyzing a cobalt salt, particularly cobalt sulfate, liquid electrolyte having a calcium phosphate material, particularly hydroxylapatite, suspended therein, employing a cobalt anode and the metal substrate as cathode. The particles of cobalt so codeposited with the particles of calcium phosphate material, e.g. hydroxylapatite, hold the latter particles strongly on the substrate metal. If desired, a second coating of the pure calcium phosphate material, e.g. 'hydroxylapatite', optionally can be applied over the codeposited hydroxylapatite-cobalt coating. The calcium phosphate coated metal substrate of the invention, particularly the codeposited 'hydroxylapatite'-cobalt coating, on a titanium or cobalt-chromium substrate, has particular value for application as medical implants, e.g. as hip prosthetics, and for high temperature high stressed applications.