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:
Aug. 21, 2007
Filed:
May. 12, 2004
James L. Mcdonald, Naperville, IL (US);
Allan D. Kautz, Naperville, IL (US);
James L. McDonald, Naperville, IL (US);
Allan D. Kautz, Naperville, IL (US);
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Abstract
An x-ray tube () includes an anode () defining a target. A cathode assembly () is in operative relationship with the anode to produce x-rays (). An evacuated envelope () encloses the anode and cathode. The evacuated envelope includes a metal frame portion (). The material comprising the metal frame portion has a backscatter coefficient. An x-ray transmissive window () is joined in a vacuum tight manner to the metal frame portion of the evacuated envelope. The material comprising the x-ray transmissive window has a backscatter coefficient. A backscatter layer () is deposited on the x-ray transmissive window and the metal frame portion of the evacuated envelope around the x-ray transmissive window. The backscatter layer has a backscatter coefficient greater than the backscatter coefficient of both of the window and the metal frame.