Resources Contact Us Home
Combined semiconductor gas sensor

Image Number 5 for United States Patent #5298783.

The present invention relates to a combined semiconductor gas sensor, this sensor is constituted by combining two portions, each of the portions is made of a different gas sensitive material, their resistance exhibit different variation with the variation of the density of a specific gas, a detecting signal is led out from the junction of the two portion. Because of the mutual compensation and propagation effect of the two portions of the above mentioned gas sensor, the stability and/or sensitivity as well as the stability to temperature and humidity and the initial relaxation time can be improved. Gas sensors of different characteristics can be obtained by different combinations of two different gas sensitive materials selected according to need.

  Recently Added Patents
Methods and devices for enforcing network access control utilizing secure packet tagging
Method and system for physical verification using network segment current
Information repository search system
Method for producing (meth)acrylic anhydride, method for storing (meth)acrylic anhydride, and method for producing (meth)acrylate
Touch screen panel
System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS
Resin composition and molded article
  Randomly Featured Patents
Apparatus and method for the detection of security violations in multilevel secure databases
Automated conversion of CALS-compatible tables to accessible HTML tables
Image processing system and image judgment method and program
Kiosk unit
Shrouded connector assembly
Solar energy device
Instantaneous-tripping circuit breaker
Fluorescence method of quantifying hydrocarbons, including crude oil, dispersed in water
Boot upper