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. 08, 1997
Filed:
Jul. 24, 1995
Catherine Keely Templin, Los Altos, CA (US);
Douglass McManigill, Palo Alto, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A microcolumnar analytical apparatus having a flow gating interface system for interfacing a first microcolumn and a second microcolumn is provided. The apparatus includes a flow gating interface, a first fluid conduit (e.g. a liquid chromatograph microcolumn) of a fluid sample, a flush liquid supplier, and a second fluid conduit (e.g. a capillary electrophoresis microcolumn) for analysis of the effluent fluid sample from the first fluid conduit. The flow gating interface includes a first microcolumnar section, a second microcolumnar section, and a channel. The channel, having an inwardly facing wall, encloses at least a portion each of the first microcolumnar section and the second microcolumnar section for conducting a flush fluid flow past the outlet end of the first microcolumnar section and the inlet end of the second microcolumnar section. The inwardly facing wall of the channel nonfixedly constrains and aligns said end portions of the first and second microcolumnar section due to the relative curvature and elasticity of the microcolumnar sections and the channel. The first fluid conduct is connected to and in fluid communication with the first microcolumnar section of the flow gating interface. The second fluid conducting means has a microcolumn. This microcolumn is connected to and in fluid communication with the second microcolumnar section of the flow gating interface. The flush liquid supplier is connected to and in fluid communication with the channel.