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:
Jan. 07, 2020
Filed:
May. 18, 2017
Applicant:
Wisconsin Alumni Research Foundation, Madison, WI (US);
Inventors:
Jessica Fagerstrom, Edmonds, WA (US);
Edward Bender, Madison, WI (US);
Wesley Culberson, Madison, WI (US);
Michael Lawless, Madison, WI (US);
Benjamin R. M. Palmer, Madison, WI (US);
Larry DeWerd, Madison, WI (US);
Assignee:
Wisconsin Alumni Research Foundation, Madison, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61N 5/10 (2006.01); G21K 3/00 (2006.01);
U.S. Cl.
CPC ...
A61N 5/1077 (2013.01); A61N 2005/1091 (2013.01); A61N 2005/1095 (2013.01);
Abstract
A sharpening filter for orthovoltage x-ray beams employs a substantially planar filter disk supporting a set of radial symmetric features controlling attenuation of x-ray transmission in concentric circular regions providing increased sharpness of the pencil beams in a compact filter structure that may be tailored to different beam sizes and focus depths.