Patents Assigned to Assay Technologies, Inc.
  • Integrated exposure monitoring device
    Patent number: 4946705
    Abstract: A simple, inexpensive, and versatile device for measuring gaseous substances and a method for manufacture of such devices are described. The device comprises a reflectant backing which is disposed a layer which is composed of microparticles coated with a reagent and then with a diffusion layer which contains a diffusion moderator and binder, and optionally a plasticizer. A variety of useful configurations of this device are described.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: August 7, 1990
    Assignee: Assay Technologies, Inc.
    Inventors: Charles R. Manning, Leroy J. Pinto