Patents Assigned to Assay Tec Associates, Inc.
  • Method to manufacture gas monitoring test strips
    Patent number: 5106647
    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 upon 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: August 6, 1990
    Date of Patent: April 21, 1992
    Assignee: Assay Tec Associates, Inc.
    Inventors: Charles R. Manning, Leroy J. Pinto
  • Ethylene oxide process dosimeter
    Patent number: 4436819
    Abstract: A device for chemically quantifying ethylene oxide exposure is disclosed as are methods for its use. The device comprises an ethylene oxide-permeable layer exhibiting unusual non-Fickian EO transport and containing a controlled amount of compound which forms a colored species upon reaction with ethylene oxide. Optionally, the response layer is laminated or otherwise joined with a support layer. The device can be used to quantify in industry accepted units of time and concentration sterilization dosages of ethylene oxide.
    Type: Grant
    Filed: March 3, 1982
    Date of Patent: March 13, 1984
    Assignee: Assay Tec Associates, Inc.
    Inventor: Charles R. Manning