Patents by Inventor Jens Peter Kaerst

Jens Peter Kaerst 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).

  • Emitter design including emergency operation mode in case of emitter-damage for medical X-ray application
    Patent number: 7693265
    Abstract: The invention relates the field of electron emitter of an X-ray tube. More specifically the invention relates to flat thermionic emitters to be used in X-ray systems with variable focus spot size and shape. The emitter provides two main terminals (3, 5) which form current conductors and which support at least two emitting portions (7, 9). The emitting portions are structured in a way so that they are electron optical identical or nearly identical increasing the emergency operating options in case of emitter damage.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: April 6, 2010
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Stefan Hauttmann, Jens Peter Kaerst
  • EMITTER DESIGN INCLUDING EMERGENCY OPERATION MODE IN CASE OF EMITTER-DAMAGE FOR MEDICAL X-RAY APPLICATION
    Publication number: 20090103683
    Abstract: The invention relates the field of electron emitter of an X-ray tube. More specifically the invention relates to flat thermionic emitters to be used in X-ray systems with variable focus spot size and shape. The emitter provides two main terminals (3, 5) which form current conductors and which sup-port at least two emitting portions (7, 9). The emitting portions are structured in a way so that they are electron optical identical or nearly identical increasing the emergency operating options in case of emitter damage.
    Type: Application
    Filed: May 2, 2002
    Publication date: April 23, 2009
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Stefan Hauttmann, Jens Peter Kaerst