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. 09, 1997
Filed:
Mar. 29, 1995
Rex O Bare, Lake Forest, CA (US);
Andy Scherer, San Dimas, CA (US);
Unifet, Incorporated, San Diego, CA (US);
Abstract
An electrochemical sensor assembly which allows a solution to make contact with an active sensing area of a sensor, while constraining the solution such that the fluid does not contact the sensor electronics and a method for fabricating such a sensor assembly. A sensor assembly is fabricated in accordance with a simple process, including: fabricating a master pattern which matches the external profile of an epoxy shell which will encapsulate a substrate upon which the sensors are mounted; forming a flexible tool (or mold) which conforms to the general profile of the master pattern; placing sensors together with any other desired electronic circuitry on a substrate (such as a printed circuit board or a ceramic pad to form a 'hybrid'); pressing a number of electrical contact points on the hybrid and the active sensing area of each sensor on the substrate into contact with flexible protrusions of the flexible tool; and potting the hybrid. Due to the fact that the protrusions from the flexible tool are in contact with the hybrid and structures thereon, a seal is formed to prevent potting material from contacting and covering the predetermined areas of the hybrid covered by the protrusions from the flexible tool.