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:
Jun. 12, 1990
Filed:
Jan. 19, 1989
Applicant:
Inventors:
Assignee:
Ivoclar Ag, Schaan, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427-2 ; 427307 ; 427327 ; 427387 ; 4273881 ; 4273977 ; 427409 ;
Abstract
In a process for improving the adhesion of plastics to metals in the production of dental prostheses, in which a silicon dioxide layer is applied to the metal surface and subsequently silanized and then the plastic and metal bonded together the improvement consisting essentially of, forming the silicon dioxide layer by (1) applying a silica sol or dispersion of very finely divided silica to the metal surface and (2) baking the sol or dispersion at a temperature of 100.degree. to 800.degree. C.