Patents by Inventor James R Berna

James R Berna 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).

  • Filter rings
    Patent number: 7041217
    Abstract: A filter ring includes a first filter member including a first end portion and a second filter member including a second end portion. The filter ring also includes at least one snap latch mechanism for detachably engaging the first end portion with the second end portion such that the first and second filter members cooperate to define a generally annular shape having a central opening. The first end portion includes at least one key configured to be positioned within at least one keyway defined by the second end portion for inhibiting disengagement of the snap latch mechanism when the snap latch mechanism is detachably engaging the first end portion with the second end portion.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: May 9, 2006
    Assignee: Filtertek Inc.
    Inventors: Jeffery A Close, Eugene W Altwies, James R Berna