The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 2010
Filed:
Apr. 30, 2007
Leslie Bromberg, Sharon, MA (US);
Alex Sappok, Cambridge, MA (US);
Ronald Parker, Belmont, MA (US);
Peter Koert, Boston, MA (US);
Victor Wong, Peabody, MA (US);
Leslie Bromberg, Sharon, MA (US);
Alex Sappok, Cambridge, MA (US);
Ronald Parker, Belmont, MA (US);
Peter Koert, Boston, MA (US);
Victor Wong, Peabody, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
Method for determining loading of a filter. The filter has a first dielectric constant. The filter becomes loaded with contaminant material that has a second dielectric constant. The filter, such as a diesel particulate filter, is contained within a metallic enclosure forming a microwave cavity. The method includes establishing microwave energy in the cavity and monitoring changes in the cavity microwave response, the changes being related to filter loading.