Patents by Inventor Knut Sven Eric Forssberg

Knut Sven Eric Forssberg 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).

  • Method for producing high alumina refractory material
    Patent number: 3953563
    Abstract: A method in the manufacture of high alumina refractory bricks containing more than 50% by weight alumina, in which moist refractory starting material is pressed into brick shapes, dried and hydrothermally bound. The principal binding agent used is finely divided activated alumina and is either added alone or together with any one of the substances slaked lime, slaked magnesia and finely divided silicon dioxide. The conditions chosen for the hydrothermal treament being such as to convert essentially all the activated alumina into boehmite.
    Type: Grant
    Filed: April 24, 1973
    Date of Patent: April 27, 1976
    Assignee: Advanced Mineral Research
    Inventors: Per Gudmar Kihlstedt, Knut Sven Eric Forssberg