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:
Sep. 03, 1985
Filed:
Jul. 14, 1983
Dennis L Krause, Atkinson, NH (US);
AT&T Technologies, Inc., Berkeley Heights, NJ (US);
Abstract
An electrical substrate circuit device (10) includes a thick film crossunder conductor (14) and a thin film crossover conductor (16). An intermediate portion of the thick film conductor (14) is covered with a coating (28) of electrically insulating glaze material and opposite end portions (18) of the thick film conductor are electrically connected to thin film contact pads (20) by electrically conductive contact portions (22) in an electrically insulating protective tantalum pentoxide film layer (24). The electrically conductive contact portions (22) are produced by gold material in the end portions (18) of the thick film conductor (14) diffusing into overlying portions of a tantalum film (30) as the tantalum film is converted to the protective tantalum pentoxide film layer (24) by thermal oxidation.