Patents by Inventor Peter Dahlmann

Peter Dahlmann 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).

  • Product of a high-strength nitrogen containing fully austenitic cobalt steel having yield strengths above 600 N/MM2
    Patent number: 4865661
    Abstract: A high strength austenitic steel having a yield strength above 600 N/mm.sup.2 at 02% permanent strain, containing about 0.5 to 1.5% by weight of nitrogen, about 6 to 12% by weight cobalt, and less than 5% by weight nickel. The steel is treated at about 1050.degree. C. to 1200.degree. C. and then quenched in water.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: September 12, 1989
    Assignee: Fried. Krupp GmbH
    Inventors: Peter Dahlmann, Johannes Jachowski, Paul Pant, Gerald Stein