Patents by Inventor Timothy J Chisholm

Timothy J Chisholm 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).

  • Methods, apparatus and products for filtering
    Patent number: 10279295
    Abstract: A device for filtering a gas stream, having a vessel partitioned into a first stage and a second stage, with an opening between stages. A filter element is positioned in the opening, with ends of the filter element extending into the first and second stages. The first member is removable from the second member while the filter element is positioned in the opening, to allow for replacement with a new clean member.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: May 7, 2019
    Assignee: FILTRATION GROUP CORPORATION
    Inventors: Alan L Clarke, John W. Clarke, Timothy J Chisholm