Patents by Inventor Hans Alt

Hans Alt 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).

  • Process for producing anhydrous alkali sulfide
    Publication number: 20060008411
    Abstract: A process and a device for producing anhydrous alkali sulfide, wherein hydrous alkali sulfide is dried by fluidized bed spray granulation.
    Type: Application
    Filed: August 8, 2005
    Publication date: January 12, 2006
    Inventors: Hans Alt, Andreas Golz, Alfred Alig
  • Method for determining the substitutional carbon content in monocrystalline or polycrystalline silicon
    Publication number: 20050211901
    Abstract: A method for determining the substitutional carbon content (Cs) of a monocrystalline or polycrystalline silicon sample comprises measuring an absorption spectrum of the silicon sample to be studied and of a reference sample and calculatng a differential spectrum from them, wherein the calculated differential spectrum provides a detection threshold of <5 ppba Cs.
    Type: Application
    Filed: March 14, 2005
    Publication date: September 29, 2005
    Inventors: Ivo Crossmann, Hans Alt
  • Process for the granulation of an animal feedstuff additive
    Publication number: 20050025878
    Abstract: The invention relates to a process for the granulation of an animal feedstuffs additive comprising amino acids or vitamins in a circulating fluidized bed, wherein the additive is preferably a fermentation product and optionally comprises further constituents from the fermentation broth.
    Type: Application
    Filed: July 9, 2004
    Publication date: February 3, 2005
    Applicant: Degussa AG
    Inventors: Hans Alt, Stefan Stockhammer, Matthias Moll, Joachim Pohlisch, Claas-Jurgen Klasen