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Class Information
Number: 250/343
Name: Radiant energy > Invisible radiant energy responsive electric signalling > Infrared responsive > With means to transmission-test contained fluent material
Description: Subject matter having a source of infrared radiation in addition to the signalling means and means to confine a gas, fluid or fluid-like material between the source and the signalling means so that the signalling means responds to radiation, from the source, that passes through the material.










Sub-classes under this class:

Class Number Class Name Patents
250/345 Plural beam/detector pairs 205
250/344 Plural series signalling means 58


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Patent Number Title Of Patent Date Issued
8692202 Gas exchange system flow configuration with thermally insulated sample chamber Apr. 8, 2014
8674306 Gas sensing system employing raman scattering Mar. 18, 2014
8670878 Portable equipment Mar. 11, 2014
8661896 Protective enclosure for use with a sensor for detecting an analyte Mar. 4, 2014
8642966 Gas analyzer for measuring at least two components of a gas Feb. 4, 2014
8631683 Dialysis systems including non-invasive multi-function sensor systems Jan. 21, 2014
8610072 Gas exchange system flow configuration Dec. 17, 2013
8599382 Automated in situ contaminant detection system Dec. 3, 2013
8586930 Simplified beam splitter for IR gas sensor Nov. 19, 2013
8582105 Method and apparatus for leak detection in H2Se furnace Nov. 12, 2013
8539816 Method and apparatus for locking a laser with a resonant cavity Sep. 24, 2013
8492722 Volatile organic compound sensor Jul. 23, 2013
8471208 Non-dispersive infrared (NDIR) gas sensor Jun. 25, 2013
8466799 Apparatus for detecting carbon dioxide concentration in unsaturated zone, and carbon dioxide concentration monitoring method Jun. 18, 2013
8455827 Method and apparatus for determining the water content of organic solvent solutions Jun. 4, 2013
8448495 Device for quantifying the contents of at least one gaseous constituent contained in a gaseous sample from a fluid, related assembly and process May. 28, 2013
8446586 Method and apparatus for increasing adipose vascular fraction May. 21, 2013
8441644 Method and apparatus for the photo-acoustic identification and quantification of analyte species in a gaseous or liquid medium May. 14, 2013
8415626 Intrinsically safe NDIR gas sensor in a can Apr. 9, 2013
8405033 Optical sensor for rapid determination of particulate concentration Mar. 26, 2013
8399837 Apparatus for measurement of gas concentrations in breath Mar. 19, 2013
8399839 Infrared optical gas-measuring device Mar. 19, 2013
8390813 Apparatus and method for monitoring of gas having stable isotopes Mar. 5, 2013
8390814 Interactive variable pathlength device Mar. 5, 2013
8368896 Measurement of sulfur trioxide via spectroscopy Feb. 5, 2013
8362429 Method and apparatus for oil spill detection Jan. 29, 2013
8360974 Diagnostic method for high sensitivity detection of component concentrations in human gas emissions Jan. 29, 2013
8327686 Method and apparatus for the photo-acoustic identification and quantification of analyte species in a gaseous or liquid medium Dec. 11, 2012
8324572 Radiometric fill level measuring arrangement Dec. 4, 2012
8228489 Optical sensing system for liquid fuels Jul. 24, 2012
8229679 Stepped chirp lidar system and method Jul. 24, 2012
8222606 Air sampler for recalibration of absorption biased designed NDIR gas sensors Jul. 17, 2012
8212682 Method and device for easily monitoring the maintenance status of an UV-drinking water disinfection system in an aircraft Jul. 3, 2012
8204626 Control device for mobile body Jun. 19, 2012
8193502 Optical absorption gas sensor Jun. 5, 2012
8178832 Re-calibration methodology for NDIR gas sensors May. 15, 2012
8158946 Intrinsically safe improved sensitivity NDIR gas sensor in a can Apr. 17, 2012
8147757 Filter with memory, communication and concentration sensor Apr. 3, 2012
8148692 Method for ensuring the safety of the components of the drive train of a vehicle following the deterioration of the fuel Apr. 3, 2012
8137983 Method of maintaining a protein concentration at a tangential flow filter Mar. 20, 2012
8129064 Method and apparatus for measuring methanol vapor concentration, method of controlling methanol vapor concentration in a fuel cell, and fuel cell using the same Mar. 6, 2012
8117897 Elliptical photo-acoustic sensor Feb. 21, 2012
8106785 Smoke detector Jan. 31, 2012
8102532 Resonant optothermoacoustic detection of optical absorption Jan. 24, 2012
8097856 Super-miniaturized NDIR gas sensor Jan. 17, 2012
8089629 Fuel property detection apparatus Jan. 3, 2012
8085404 Gas analyzer and gas analyzing method Dec. 27, 2011
8084259 Method of insuring the integrity of a filtering element Dec. 27, 2011
8080798 Gas measurement system Dec. 20, 2011
8077018 Smoke detector Dec. 13, 2011

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19










 
 
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