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










Image Number 3 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
Methods and systems for improved engine speed control during engine starting
Flavonoid dimers and methods of making and using such
Software self-checking systems and methods
Television receiver
Universal handle extension for unloading butterfly valve for tank trailer or other vehicle
Analysis, secure access to, and transmission of array images
Motion-compensated prediction of inter-layer residuals
  Randomly Featured Patents
Antifungal agent for the treatment of skin disease caused by trichophyton, eczema or various fungi, and also for activating the recovery of the skin and burns
Process for making tabletted detergent compositions
Self-adjusting holster particularly adapted for holding implements of a wide range of sizes
Patient transfer arrangement
System for using email message to transmit a command to remotely control a computer resource
Snow removal device for vehicles
Photoprinting machine with a device for expelling excess ammonia-containing developer medium from developed diazotype paper
Shoe and sole fitted with torsion stiffener
Handlebar for two wheeled vehicle
Seaweed supplement diet for enhancing immune response in mammals and poultry