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:
May. 04, 1999
Filed:
May. 30, 1997
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An electrochemical sensor is provided on a substrate whereby a precious metal layer is arranged in an inner region under an electrolyte layer that is surrounded by a polyimide structure. A hydrophobic layer is surrounded by an outer polyimide structure and further is located on top of the electrolyte layer and extends laterally beyond the electrolyte layer. A lead for electrical connection of the precious metal layer extends under the hydrophobic layer laterally from the electrolyte layer is sealed from the hydrophobic layer by a protective layer. The protective layer prevents the penetration of analysis fluid into the gap between the hydrophobic layer and the surrounding polyimide structure into the inner region of the sensor. The material of the protective layer is preferably a double layer of PECVD oxide and PECVD nitride.