Patents by Inventor Wolfgang Wrede

Wolfgang Wrede 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).

  • Fragrance-containing preparation
    Patent number: 6140303
    Abstract: The invention relates to a preparation which comprises perfume, polymer, aluminium stearate and essentially water. This gives a product which can be produced very easily at low cost and which has an unexpectedly linear fragrance release over a period of more than four weeks.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: October 31, 2000
    Assignee: Haarmann & Reimer GmbH
    Inventors: Wolfgang Wrede, Jorg Droge
  • Drying composition comprising an odoriferous substance
    Patent number: 5951970
    Abstract: The invention relates to a composition which donates an odoriferous substance and absorbs moisture, and can preferably be employed in wardrobes and similar containers, and in small rooms, for keeping the atmosphere dry.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: September 14, 1999
    Assignee: Haarmann & Reimer GmbH
    Inventors: Wolfgang Wrede, Joachim Kochta
  • Process and device for the continuous vaporiation of volatile active compounds
    Patent number: 4971669
    Abstract: The invention relates to a process for the vaporization of volatile active compounds and mixtures of active compounds according to which the active compound or the mixture of active compounds is conveyed from its storage vessel by the use of an electrolytically produced gas stream into the room which is to be supplied with a vaporizing mixture of active compounds, and is there caused to vaporize directly or by the use of inert vaporizers.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: November 20, 1990
    Assignee: Haarmann & Reimer GmbH
    Inventors: Wolfgang Wrede, Norbert Rohde