Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Gas detectors and gas analyzers utilizing spectral absorption










Image Number 6 for United States Patent #4746218.

Instrumentation to detect the presence of, or to measure the concentration of, a gas or pollutant in a gaseous environment. With the use of gas filter correlation techniques and energy beams having suitable wavelengths, the presence and concentrations of these can be detected and measured, not only in flowing streams such as in exhaust stacks, but above a ground area and around its perimeter. A calibration means using a retrodirective reflector is also shown.








 
 
  Recently Added Patents
Pickup device and method for manufacturing the same
Display apparatus, control method thereof, and program
System and method for terminating communication sessions with roaming mobile devices
Segmentation of a product markup image based on color and color differences
Tray for microwave cooking and folding of a food product
Image decolorizing device
Methods of diagnosing a plasmodium infection
  Randomly Featured Patents
Multipurpose pulverizer device
Switching mode power supply with protection function against overcurrent and overvoltage
Extraction of compounds from plant materials using supercritical fluids
Map information display apparatus for vehicle
Global intersection analysis for determining intesections of objects in computer animation
Froth and durable foam of dispersed olefin polymers, methods of making foam and articles prepared from same
Electrosurgical medical system and method
Flight crew rest and attendant rest environmental control system
Additional control valve device for an inlet channel of a reciprocating internal combustion engine
Container with multiple transverse dividers