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. 07, 1987
Filed:
Jul. 30, 1984
Applicant:
Inventors:
Robert E Kraska, Minneapolis, MN (US);
Frank J Wilary, Plymouth, MN (US);
Joseph F Lessar, Coon Rapids, MN (US);
Assignee:
Medtronic, Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B / ; C03C / ;
U.S. Cl.
CPC ...
1741 / ; 228122 ;
Abstract
A hermetic feedthrough consisting of a niobium electrical lead-in wire surrounded by an alumina insulator which is carried by a niobium ferrule, the feedthrough being particularly adapted for being welded to the titanium container of an implantable medical device. The niobium and alumina parts are joined together by means of a pure gold braze, the surfaces of the alumina being first metallized with a layer of niobium, titanium or niobium/titanium and an optional overlying layer of gold.