Patents by Inventor Heinrich Nobis

Heinrich Nobis 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).

  • Hot-blast furnace with foamed silicate inner layer
    Patent number: 4022572
    Abstract: A hot-blast furnace of the type including an outer metal casing and an inner lining of insulating and refractory material has therebetween a layer of foamed glass or foamed silicate material having a structure of closed pores or small cells which are closed in an air tight manner to each other. The layer prevents passage of gas, during operation of the furnace, to the inner surface of the outer metal casing.
    Type: Grant
    Filed: February 5, 1976
    Date of Patent: May 10, 1977
    Assignee: Didier-Werke AG
    Inventors: Walter Klein, Heinrich Nobis