Patents Assigned to Pima Sensors, Inc.
  • Gas sensor and sensing device
    Patent number: 5522980
    Abstract: A gas sensor comprises a substrate on which are mounted three cells. Each cell includes an interdigitated capacitor defined by a pair of comb structure, electrically conductive tracks with the fingers of the combs interleaved. The tracks of each capacitor are covered by an insulating and chemically inert protective coating of an electrolyte. A monitor monitors one of a resistive component and a capacitive component of the relative dielectric constant of the electrolyte independently of the other component.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: June 4, 1996
    Assignee: Pima Sensors, Inc.
    Inventors: Bryan S. Hobbs, John R. Finbow, Leonard S. Raymond, David A. Rohrbacker