Patents by Inventor Nils Olle Grinder

Nils Olle Grinder 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).

  • Nickel and/or cobalt-coated steel with carburized interface
    Patent number: 4013487
    Abstract: A case-hardened, corrosion-resistant steel article is provided which comprises, applying a coating of nickel and/or cobalt to the surface of the article and then subjecting said coated article to carburization by heating said coated article to and maintaining it at an austenitic temperature under carburizing conditions for a time sufficient to effect carbon diffusion into the surface of the steel article. The corrosion resistance of the steel may be further enhanced by applying a thin layer of a final metal coat selected from the group consisting of Cr, Sn, Pb, Zn, Cu and Cd.
    Type: Grant
    Filed: March 4, 1975
    Date of Patent: March 22, 1977
    Assignee: Rederiaktiebolaget Nordstjernan
    Inventors: Lars H. Ramqvist, Nils Olle Grinder, Malte Sporrong, Per Enghag
  • Process for improving the anti-corrosion properties of steel coated with nickel or cobalt
    Patent number: 4013488
    Abstract: A process is provided for coating a ferrous metal article, e.g. steel or iron, with a corrosion resistant surface layer comprising first coating said article with a layer of nickel and/or cobalt, heating said coated article for a time less than 45 minutes at a temperature in excess of 725.degree. C and then applying to said first metal layer an additional layer of at least one of the metals selected from the group consisting of chromium, tin, lead, zinc, copper and cadmium.
    Type: Grant
    Filed: March 4, 1975
    Date of Patent: March 22, 1977
    Assignee: Rederiaktiebolaget Nordstjernan
    Inventors: Lars H. Ramqvist, Nils Olle Grinder, Malte Sporrong, Per Enghag