Patents by Inventor Rainer Kohlmann

Rainer Kohlmann 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 of heat treatment of wire
    Patent number: 6682612
    Abstract: A method of heat treatment of wire including cooling the wire stock immediately after the stock leaves the rolling heat region to a temperature below the starting temperature of martensite formation and, thereafter, forming wire coils.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: January 27, 2004
    Assignee: SMS Demag AG
    Inventors: Meinert Meyer, Uwe Plociennik, Klaus Küppers, Rainer Kohlmann
  • Method of heat treatment of wire
    Publication number: 20010011566
    Abstract: A method of heat treatment of wire including cooling the wire stock immediately after the stock leaves the rolling heat region to a temperature below the starting temperature of martensite formation and, thereafter, forming wire coils.
    Type: Application
    Filed: December 20, 2000
    Publication date: August 9, 2001
    Inventors: Meinert Meyer, Uwe Plociennik, Klaus Kppers, Rainer Kohlmann
  • Method of cooling steel sections which are hot from rolling
    Patent number: 5830293
    Abstract: A method of cooling steel sections which are hot from rolling by means of shock-like cooling following the rolling process so as to form a martensitic surface layer, and by subsequently autogenously tempering this surface layer by means of core heat to obtain a tough-resistant structure with an austenitic remaining cross-section, wherein the method is used in connection with types of steel which, with uncontrolled cooling in air, would directly transform from the austenitic phase into martensite because of their alloying elements from the group Cr, Mn, Mo, Ni and other suitable elements.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: November 3, 1998
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Meinert Meyer, Rainer Kohlmann