Patents by Inventor Susan Leslie Hietala

Susan Leslie Hietala 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).

Method and apparatus for measuring surface changes, in porous materials, using multiple differently-configured acoustic sensors

Patent number: 6257048

Abstract: A method and apparatus for measuring surface changes, such as mass uptake at various pressures, in a thin-film material, in particular porous membranes, using multiple differently-configured acoustic sensors.

Type: Grant

Filed: June 18, 1999

Date of Patent: July 10, 2001

Assignee: The United States of America as represented by the United States Department of Energy

Inventors: Susan Leslie Hietala, Vincent Mark Hietala, Chris Phillip Tigges

Method and apparatus for measuring surface changes, in porous materials, using multiple differently-configured acoustic sensors