Patents by Inventor Per Olof Gunnar Dahlberg

Per Olof Gunnar Dahlberg 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).

  • Material for coating and product coated with the material
    Patent number: 7285151
    Abstract: The invention relates to an iron based material for coating of surfaces which comprises a binding phase in the form of a corrosion dense alloy which contains at least 50% Fe, 12-30% Cr, maximally 5% Mn, 0-40% Ni, preferably 6-20% Ni and 0-7% Mo and 0-1% N and 6-20% Si, all stated as weight percent, which addition of Si lowers the liquidus temperature, that is the temperature at which the binding phase is completely melted. The invention also aims at products of metal coated with the iron based material mentioned above.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: October 23, 2007
    Assignee: Alfa Laval Corpoarate AB
    Inventors: Per Erik Sjodin, Per Olof Gunnar Dahlberg