Patents by Inventor Johan Bjorksten

Johan Bjorksten 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).

  • CONTINUOUS PROCESS FOR PREPARING UNIDIRECTIONALLY REINFORCED METAL FOAM
    Patent number: 3941182
    Abstract: Steel wires are pulled through a reactor tube in which they continuously interact with a foaming metal mass. The steel wires are coated with a metal which forms a binary alloy with the matrix metal, thereby protecting the steel from being dissolved. The foaming matrix metal is usually an aluminum alloy but can be any light or low melting metal including zinc or lead. The steel wires protect the metal foam from cracking in the pultrusion process.
    Type: Grant
    Filed: July 31, 1973
    Date of Patent: March 2, 1976
    Inventors: Johan Bjorksten, Edward J. Rock