Patents by Inventor Gerhard Scharf

Gerhard Scharf 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).

  • Metallurgical plasma melting process
    Patent number: 4626654
    Abstract: A metallurgical plasma melting process wherein a plasma burner and a separate start-up burner disposed alongside same in the same port have their axes intersecting in the furnace at an acute angle. Only the start-up burner is operated initially to form a crater in material in the furnace. Thereafter the plasma burner is ignited and the start-up burner is turned off when the plasma burner is operating at full efficiency.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: December 2, 1986
    Assignee: VEB Edelstahlwerk "8 Mai 1945" Freital
    Inventors: Fred Esser, Detlev Klopper, Walter Lachner, Gerhard Scharf
  • Chemical compounds, process for their preparation, agents containing these compounds, and their use
    Patent number: 4467085
    Abstract: Carrier-bonded compounds are described which serve as chromogens for analytical indicators contained in a carrier. A process for the preparation of these carrier-bonded chromogens, an agent containing these chromogens, and their use in the detection and determination of constituents of body fluids and excrements are also described.
    Type: Grant
    Filed: April 28, 1981
    Date of Patent: August 21, 1984
    Assignee: Gerhard Scharf
    Inventor: Gerhard Scharf
  • Contact electrode for melting and heating furnaces with DC plasma heating
    Patent number: 4390773
    Abstract: The invention relates to a metallurgical plasma melting furnace used for the melting of metals and alloys wherein at least one auxiliary start-up burner for liquid or gaseous fuels is so arranged adjacent to each plasma burner that the hot combustion gases enter into the plasma melting furnace through the same opening in the sidewall of the furnace vessel and melt a crater into the charge material in front of the plasma burner. After the crater has reached a sufficient size, the plasma burners can be reliably operated industrially.
    Type: Grant
    Filed: February 5, 1981
    Date of Patent: June 28, 1983
    Inventors: Fred Esser, Detlev Klopper, Walter Lachner, Gerhard Scharf