Patents by Inventor Clemens Keller

Clemens Keller 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: 11955334
    Abstract: A vapor phase epitaxy method of growing a III-V layer with a doping profile that changes from a p-doping to an n-doping on a surface of a substrate or a preceding layer from the vapor phase from an epitaxial gas flow, at least one first precursor for an element of main group III, and at least one second precursor for an element of main group V. When a first growth height is reached, a first initial doping level is set by means of a ratio of a first mass flow of the first precursor to a second mass flow of the second precursor in the epitaxial gas flow, and subsequently, by stepwise or continuously changing the ratio of the first mass flow to the second mass flow and by stepwise or continuously increasing a mass flow of a third precursor for an n-type dopant in the epitaxial gas flow.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: April 9, 2024
    Assignee: AZUR SPACE Solar Power GmbH
    Inventors: Gregor Keller, Clemens Waechter, Thorsten Wierzkowski
  • Publication number: 20040094980
    Abstract: In a large package of insulation material products, in particular mineral wool products in the form of panels or rolls or the like, which consist of at least two stacks of rock wool products and wherein each stack is wrapped with a sheeting, which surrounds the stack in the form of an envelope, two adjacently lying principal surfaces of the stack are joined to one another by means of a superposed sheeting, in which eye-like handle loops are formed, at least one handle loop being arranged on each stack.
    Type: Application
    Filed: July 10, 2003
    Publication date: May 20, 2004
    Inventors: Manfred Armbrust, Michael Becker, Lothar Bihy, Clemens Keller, Jurgen trappman