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. 10, 1994
Filed:
Nov. 19, 1992
The Dow Chemical Company, Midland, MI (US);
Abstract
A chemical sensor and method for in-line chemical analysis including a body having a central cavity. The body also has a pair of openings through it to the cavity. A porous plug, such as a ceramic frit, is sealed into each of these openings so that there is a space between the plugs in the cavity. A vent passageway through the body to the cavity is also provided. A pressurized sample is flowed through one porous plug into the cavity while a pressurized reagent is flowed through the other porous plug into the cavity. A component of interest of the sample reacts with a reactive component of the reagent in the cavity to produce a reaction product. The reaction product is analyzed in the cavity by, for example, absorption spectroscopy. As fresh sample and reagent flow into the cavity, the reaction products flow out of the cavity by way of the vent passageway. An ultrasonic vibrator is attached to the body to enhance mixing of the reagent and sample in the cavity