Patents by Inventor Malcolm B. Burleigh

Malcolm B. Burleigh 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).

  • Colorimetric indicators
    Patent number: 4421719
    Abstract: A colorimetric indicator in sheet form comprising an indicator substance, a high surface area carrier for said indicator substance, and a self-adhering clay mineral binder coated on a backing is disclosed. The colorimetric indicator is useful for personal monitors, as end of service life indicators for respirators, thin layer chromatography plates, and vapor transfer sheets.
    Type: Grant
    Filed: October 8, 1981
    Date of Patent: December 20, 1983
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Malcolm B. Burleigh