Patents by Inventor Wilhelm Brunger

Wilhelm Brunger 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).

  • Patent number: 5369274
    Abstract: A commercially available Auger apparatus is developed in such a manner that t is suitable for carrying out a high-resolution x-ray photoelectron spectroscopy. As a result, the stress to the material is low while the resolution capacity is high. The primary electron beam of an Auger probe impinges on the rear surface of the membrane and induces an x-ray radiation. This x-ray radiations triggers photoelectrons from the membrane surface which are used for the analysis of the uppermost atom layers of the surface. By means of a sample holder, which is designed as a Faraday cage, the electrons are kept back which are emitted from the rear surface of the membrane. The method is suitable for examining very fine structures in the .mu.- and sub-.mu.-range.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: November 29, 1994
    Assignee: Fraunhofer Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventor: Wilhelm Brunger
  • Patent number: 4258283
    Abstract: A cathode assembly for electron emission, comprises, a heatable support of high-temperature resistant material, an emitter body of lanthanum hexaboride, and an auxiliary body having a surface contact with both the support and the emitter body, which is made of a third material, comprising a sintered material of the class of carbides, nitrides and borides. The surface contact area between the auxiliary body and the support amounts to at least 1/6 of the surface area of the emitter body.
    Type: Grant
    Filed: August 31, 1978
    Date of Patent: March 24, 1981
    Assignee: Balzers Aktiengesellschaft fur Hochvakuumtechnik und Dunne Schichten
    Inventors: Wilhelm Brunger, Gottfried Mollenstedt