Patents by Inventor John Hilker

John Hilker 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).

  • Systems and methods for measuring and reducing dust in granular material
    Publication number: 20050279277
    Abstract: The invention is directed to apparatus and methods for measuring and for reducing dust in granular polysilicon. In one aspect, a system includes a process vessel having a vacuum port for pulling dust from the polysilicon. Another system of the invention includes a baffle tube for receiving a polysilicon flow. A measuring system includes a manifold and filter for separating and measuring the dust from a flow of polysilicon. The invention is also directed to methods of using the systems, to methods of manufacturing and packaging granular polysilicon, and to a supply of granular polysilicon.
    Type: Application
    Filed: August 31, 2004
    Publication date: December 22, 2005
    Inventors: John Holder, Hariprasad Sreedharamurthy, John Hilker