Patents Assigned to MDA Scientific, Inc.
  • Colorimetric detection apparatus
    Patent number: 5091642
    Abstract: A monitor for the detection of a target gas by sensing the color change of a colorimetric indicator material. The monitor includes a light detector positioned and having a surface oriented to receive light reflected from the colorimetric indicator material and a light source positioned between the colorimetric indicator material and the light detector and oriented to provide illumination to the colorimetric indicator material but not to the light detector.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: February 25, 1992
    Assignee: MDA Scientific, Inc.
    Inventors: Vincent Chow, Byron Denenberg
  • Hydride gas detecting tape
    Patent number: 4420567
    Abstract: A tape coated with an adsorbent and impregnated with a processing solution which includes silver nitrate, an acid, an alcohol and a glycol is a sensitive detecting means for hydride gases and is stable upon exposure to light.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: December 13, 1983
    Assignee: MDA Scientific, Inc.
    Inventors: Roberta McMahon, Franco F. Fiorese
  • Reader recorder for toxic gas concentration tapes
    Patent number: 4073621
    Abstract: A reader recorder which will plot a concentration versus time graph based on stain intensity of a gas sensitive tape. Simultaneously, the device will integrate the area under the curve to obtain the total dosage for the period of time covered by the graph. By means of a common drive system for the recorder and the tape drive a meaningful relationship between displacement on the tape and position on the graph is obtained yielding information on the exact time of occurrence of events of interest.
    Type: Grant
    Filed: February 25, 1976
    Date of Patent: February 14, 1978
    Assignee: MDA Scientific, Inc.
    Inventors: Rame Bull, Byron A. Denenberg, Djorde R. Popovic