Microsensors for gaseous and vaporous species
May 11, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesElectrolysis apparatus using a diaphragm of a solid polymer electrolyte Electrochemical cell sensor for continuous short-term use in tissues and blood Complete glucose monitoring system with an implantable, telemetered sensor module Transparent multi-oxygen sensor array and method of using same Fast response time microsensors for gaseous and vaporous species Two-dimensional diffusion glucose substrate sensing electrode Surface type microelectronic gas and vapor sensor Patent #: 4900405 InventorsAssigneeApplicationNo. 882459 filed on 05/11/1992US Classes:204/414, Gel electrolyte204/415, Selectively permeable membrane204/424, Gas sample sensor204/431, Gas sensing electrode204/432With gas diffusion electrodeExaminersPrimary: Niebling, John F.Assistant: Bell, Bruce F. Attorney, Agent or FirmInternational ClassG01N 027/26AbstractA sensor for gaseous and vaporous species is disclosed. The sensor comprises an electrically insulated substrate which contains small pores passing completely through it. Electrodes consisting of metallic or semiconductor material are deposited onto the top surface of the substrate. In a first embodiment of the invention, an electrolyte is placed on the top surface of the substrate in such a manner as to create a gas or vapor permeable electrolyte layer on top of the electrodes. In a second embodiment of the invention, the electrolyte is applied to the bottom surface of the substrate and seeps up through the porous holes of the substrate until it makes contact with the electrodes. Both embodiments result in a gas sensor with a response time dependent upon the gas flow rate rather than the time required for the gas to be dissolved in the electrolyte layer and be detected.Field of SearchSelectively permeable membraneGel electrolyte Three or more electrodes Organic membrane Gas sample sensor With impressed current means Planar electrode surface With gas reference material With protective element Protective element is a layer Gas sensing electrode With gas diffusion electrode Perforated or foraminous electrode |
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