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:
Apr. 14, 2015
Filed:
Jul. 16, 2012
John M. Boone, Folsom, CA (US);
George W. Burkett, Jr., Davis, CA (US);
Sarah E. Mckenney, Sacramento, CA (US);
John M. Boone, Folsom, CA (US);
George W. Burkett, Jr., Davis, CA (US);
Sarah E. McKenney, Sacramento, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
Described is an apparatus for use in HVL measurement as well as methods of making measurements. One version of the apparatus is a cage structure having a central axis and a central opening defined by a filter encircling the central axis, with the filter having a thickness that varies peripherally around said central axis. The filter can be formed from multiple spaced-apart plates having varying thicknesses or can be formed from a cylinder having a continuously increasing thickness.