Patents by Inventor Timothy Andrew Hansen

Timothy Andrew Hansen 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).

  • Constant stress diffusion cell with controllable moisture content
    Patent number: 6076395
    Abstract: A device for measuring the concentration changes of a vapor at various moisture contents ranging from saturation to dry and under different confining stress as it diffuses through a porous media which includes a porous central housing having a central space and a fluid conveying line extending into the central space of the central housing and an outer housing which encompasses for containment of the central housing and is positioned in an outward spaced relation from the central housing to form a medial space, between the external housing and the internal housing and having a second fluid conveying line extending into the medial space.
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: June 20, 2000
    Assignee: The United States Army Corps of Engineers as represented by the Secretary of the Army
    Inventors: Patrick B. Black, Timothy Andrew Hansen, Robert H. Anderson