Patents by Inventor Mark T. Harder

Mark T. Harder 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 of making an electrically resistive sheet
    Patent number: 4836875
    Abstract: A method for making a sheet of resistive material having randomly oriented conductive fibers with a density of approximately 50 to 300 milligrams per square meter. The fibers are weighed, mixed with a solvent, contained in a non-turbulent state. The solvent is withdrawn under pressure through a porous film and backing. A sticky sheet material is placed in contact with the film for transferring the fibers from the film to the sheet.
    Type: Grant
    Filed: June 17, 1987
    Date of Patent: June 6, 1989
    Assignee: The Boeing Company
    Inventors: Alun L. Buttermore, Mark T. Harder