Patents by Inventor Klaus P. Hugk

Klaus P. Hugk 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).

  • Process for producing yellow copper (I) oxide with narrow particle size range
    Patent number: 5409686
    Abstract: In a process of producing copper(I) oxide by the action of an aqueous solution of a mineral acid and of oxygen-containing gas on small-lump copper metal with continuous agitation, a temperature from 10.degree. to 40.degree. C., preferably from 15.degree. to 35.degree. C., is maintained to effect a formation of particulate yellow copper(I) oxide (Cu.sub.2 O). An organic acid of the group consisting of formic acid, acetic acid, ascorbic acid, preferably ascorbic acid, may be used in addition to the mineral acid.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: April 25, 1995
    Assignee: Norddeutsche Affinerie Aktiengesellschaft
    Inventors: Gerd Mrusek, Hermann Winkler, Michael Stelter, Klaus P. Hugk
  • Refining furnace for nonferrous metal
    Patent number: 4245821
    Abstract: A furnace for the refining of nonferrous metal such as copper comprising a drum structure rotatable about a substantially horizontal axis and formed along the same side of the shell with a tapping box for discharging the molten metal and a slag-discharging weir, the interior of the furnace being subdivided into two chambers communicating respectively with the weir and with the tapping box. The partition is formed with a port interconnecting the molten metal baths in the chambers below the levels thereof to form a siphon.
    Type: Grant
    Filed: August 9, 1979
    Date of Patent: January 20, 1981
    Assignee: Norddeutsche Affinerie
    Inventors: Gerhard Kappell, Klaus P. Hugk