Patents by Inventor Arnold Grass

Arnold Grass 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).

  • Composite panel with two outer layers and a central core
    Patent number: 4250220
    Abstract: The present invention concerns a composite panel with two cover sheets and between these a core made from a mixture of a granular filler material and a binding agent. The resultant panel meets the requirements governing incombustible building components in various countries, and can therefore be put in the class of incombustible building components.The core material used in known composite panels can be inorganic and incombustible, but all such composite panels known to date suffer from severe disadvantages.To avoid these disadvantages 100 parts by weight of the core material of the panel contains: 85-95 wt % of granular filler material which has an average particle size of over 100 .mu.m and at least 50 wt % Al(OH).sub.3 and 5-15 wt % of a binding agent.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: February 10, 1981
    Assignee: Swiss Aluminium Ltd.
    Inventors: Reinhard Schlatter, Arnold Grass