Patents by Inventor Natalie N. Vanderspiegel

Natalie N. Vanderspiegel 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).

  • Patent number: 7419532
    Abstract: According to an exemplary embodiment of the present disclosure, a method of loading a filtering device includes measuring a metric indicative of an initial loading of the filtering device and desirably positioning a quantity of matter proximate the filtering device. The method also includes applying a negative pressure to the filtering device such that at least a portion of the quantity of matter is drawn into the filtering device. The method further includes measuring a metric indicative of a final loading of the filtering device.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: September 2, 2008
    Assignee: Caterpillar Inc.
    Inventors: Cheryl L. Sellers, Richard A. Crandell, Dong Fei, Jeremy Trethewey, Natalie N. Vanderspiegel