Patents by Inventor Matti Honkaniemi

Matti Honkaniemi 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 and device for producing stainless steel
    Patent number: 5514331
    Abstract: The invention relates to a method and device for producing stainless steel, comprising methods for creating a ferroalloy, such as ferrochromium, and for further processing the alloy in order to produce a desired stainless steel. According to the invention, the melt obtained from the ferro alloy production unit (1) is transferred at least partly to a ferroalloy processing unit (2) arranged in between the ferroalloy production unit (1) and the stainless steel production unit (5); in the said processing unit (2), the composition of the ferroalloy is adjusted to be suitable for the production of stainless steel.
    Type: Grant
    Filed: October 24, 1994
    Date of Patent: May 7, 1996
    Assignee: Outokumpu Steel Oy
    Inventors: Matti Honkaniemi, Veikko Juntunen, Jorma Kemppainen, Risto Pellikka, Eero Rattya
  • Method and device for clamping the electrode contact shoes around the electrode of an electric furnace
    Patent number: 4622677
    Abstract: A method and device for clamping the electrode contact shoes (2) around the electrode (1) of an electric furnace, comprising one pressure element (3) which is advantageously hydraulically operated and uniform and which surrounds the electrode contact shoes and clamps them against the electrode (1) under the action of pressure on the pressure element.
    Type: Grant
    Filed: January 13, 1983
    Date of Patent: November 11, 1986
    Assignee: Outokumpu Oy
    Inventors: Heikki Tuovinen, Kauko K. Rinne, Matti Honkaniemi, Risto M. Heikkila, Martti Jankkila
  • Electric furnace dome
    Patent number: 4491952
    Abstract: Electric furnace dome that is made especially of ceramic material and which has the necessary openings for at least electrodes and material feed, at which time the dome's center (2) inside of the tube systems (3) is cooled at least around the openings with the aid of spiral tube systems (5,7,8,9) whose tube systems (3,5,7,8,9) form a part of the dome's support system.
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: January 1, 1985
    Assignee: Outokumpu Oy
    Inventors: Matti Honkaniemi, Martti Jankkila, Aimo Nurminen, Matias Virta, Veikko Iisakka, Helge Krogerus, Heikki Tuovinen, Tarmo Mantymaki, Erkki Lajunen