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:
Aug. 13, 1991
Filed:
Feb. 05, 1990
Applicant:
Inventors:
Harvey Chung, Rancho Palos Verdes, CA (US);
Sung-Tsuen Liu, Laguna Niguel, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427-2 ; 427343 ; 4274301 ; 4274432 ;
Abstract
A method for decreasing the dissolution rate of a hydroxyapatite coating or other calcium phosphate coating formed on a metal substrate by treating the coated metal substrate in a fluoride ion containing solution. The effective reagents for fluoride treatment can be any solution which supplies fluoride ion with the suitable pH of the solution being 3 or higher, preferably 5 or higher. The treatment enhances the stability of the coating strength.