Patents by Inventor David J. Huebener

David J. Huebener has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Thin film environmental monitor
    Patent number: 5055267
    Abstract: A thin film environmental monitor for monitoring a person's exposure to an analyte in an environment, comprising a portable casing for housing the monitor, a pump in the casing for obtaining an air sample, and a sensor in the casing for sensing the concentration of the analyte in the air sample obtained by the pump. The sensor includes an active film portion coated with a dry coating adapted to cause a chemical reaction with the analyte, and a reference film portion for transmitting incident light independently of the concentration of analyte in the air sample. The sensor generates an active signal representing the amount of light transmitted by the active film portion and a reference signal representing the amount of light transmitted by the reference film portion.
    Type: Grant
    Filed: August 19, 1988
    Date of Patent: October 8, 1991
    Assignee: The United States of America as represented by the Secretary of the Department of Health and Human Services
    Inventors: G. Edward Burroughs, David J. Huebener