Patents by Inventor Uros Cvelbar

Uros Cvelbar 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).

  • Patent number: 8247039
    Abstract: A method for the partial or total modification of functional groups on the surface of polymeric materials or polymer-containing materials, by means of combined plasma functionalization and localized thermal defunctionalization, is disclosed. At first, a surface of a polymer material is exposed to a cold plasma, whereby a desired polymer functionalization is achieved. After the plasma treatment, the surface is locally heated in an optional manner, primarily by means of an electron beam, resulting in local defunctionalization of the heated surface area. The directing of the electron beam across the surface of the material results in any desired distribution of functional groups on the surface. Also disclosed is a device for performing such a treatment.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: August 21, 2012
    Assignee: Institut “Jo{hacek over (z)}ef Stefan”
    Inventors: Miran Mozetic, Alenka Vesel, Uros Cvelbar
  • Publication number: 20100047532
    Abstract: A method for the partial or total modification of functional groups on the surface of polymeric materials or polymer-containing materials, by means of combined plasma functionalization and localized thermal defunctionalization, is disclosed. At first, a surface of a polymer material is exposed to a cold plasma, whereby a desired polymer functionalization is achieved. After the plasma treatment, the surface is locally heated in an optional manner, primarily by means of an electron beam, resulting in local defunctionalization of the heated surface area. The directing of the electron beam across the surface of the material results in any desired distribution of functional groups on the surface. Also disclosed is a device for performing such a treatment.
    Type: Application
    Filed: May 16, 2006
    Publication date: February 25, 2010
    Inventors: Miran Mozetic, Alenka Vesel, Uros Cvelbar
  • Publication number: 20100024845
    Abstract: A method and device for degreasing of long products or endless materials such as metal, plastic or ceramic wires, bands, tapes, and tubes or any other materials surfaced with oil or other hydrocarbons. Long products are exposed to chemically reactive oxidative radical environment, wherein the degreasing is done at low pressure. Material coming from device, treated by this method, becomes clean, functionalized and more susceptible for any material deposition on its surface. The method for non contact cleaning of material is environmentally friendly and presents an alternative to classical wet degreasing or heat degreasing.
    Type: Application
    Filed: October 3, 2007
    Publication date: February 4, 2010
    Inventors: Primoz Eiselt, Uros Cvelbar, Miran Mozetic
  • Patent number: 7591897
    Abstract: A process for the rapid synthesis of metal oxide nanoparticles at low temperatures and methods which facilitate the fabrication of long metal oxide nanowires. The method is based on treatment of metals with oxygen plasma. Using oxygen plasma at low temperatures allows for rapid growth unlike other synthesis methods where nanomaterials take a long time to grow. Density of neutral oxygen atoms in plasma is a controlling factor for the yield of nanowires. The oxygen atom density window differs for different materials. By selecting the optimal oxygen atom density for various materials the yield can be maximized for nanowire synthesis of the metal.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: September 22, 2009
    Assignee: University of Louisville Research Foundation, Inc.
    Inventors: Mahendra Kumar Sunkara, Sreeram Vaddiraju, Miran Mozetic, Uros Cvelbar
  • Publication number: 20090114621
    Abstract: The invention relates to a method and a device (1) for the treatment of materials, in particular continuous materials such as wires, rods, tubes, etc. The device comprises a heating chamber (3) for heating a supplied material (8) during its movement through the heating chamber (3) and a plasma reactor (5) arranged downstream of the heating chamber and comprising at least one discharge chamber (10) through which the material (8) is conveyable continuously and in which the material can be subjected to plasma treatment while moving therethrough.
    Type: Application
    Filed: February 1, 2007
    Publication date: May 7, 2009
    Inventors: Primoz Eiselt, Miran Mozetic, Uros Cvelbar
  • Publication number: 20070286964
    Abstract: A method for improving the electrical connection properties of the surface of a product made from a polymer-matrix composite comprising a filler comprises the following steps:—heating of the surface of the product to a first treatment temperature above the ambient temperature;—first plasma treatment of the surface whereby removal of surface polymer and uncovering of filler is effected by oxygen radicals;—cooling down of the plasma treated surface of the product to a second treatment temperature below the first treatment temperature;—second plasma treatment of the surface created by the first plasma treatment whereby activation of the surface is effected by oxygen radicals;—depositing a metallization on the surface created by the second plasma treatment.
    Type: Application
    Filed: September 16, 2004
    Publication date: December 13, 2007
    Applicant: KOLEKTOR GROUP D.O.O.
    Inventors: Uros Cvelbar, Miran Mozetic
  • Publication number: 20070118938
    Abstract: A process for the rapid synthesis of metal oxide nanoparticles at low temperatures and methods which facilitate the fabrication of long metal oxide nanowires. The method is based on treatment of metals with oxygen plasma. Using oxygen plasma at low temperatures allows for rapid growth unlike other synthesis methods where nanomaterials take a long time to grow. Density of neutral oxygen atoms in plasma is a controlling factor for the yield of nanowires. The oxygen atom density window differs for different materials. By selecting the optimal oxygen atom density for various materials the yield can be maximized for nanowire synthesis of the metal.
    Type: Application
    Filed: March 20, 2006
    Publication date: May 24, 2007
    Inventors: Mahendra Sunkara, Sreeram Vaddiraju, Miran Mozetic, Uros Cvelbar
  • Publication number: 20060054184
    Abstract: A method for treating electronic components made of copper, nickel or alloys thereof or with materials such as brass or plated therewith and includes the steps of arranging the components in a treatment chamber, generating a vacuum in the treatment chamber, introducing oxygen into the treatment chamber, providing a pressure ranging between 10?1 and 50 mbar in the treatment chamber and exciting a plasma in the chamber, allowing the oxygen radicals to act on the components, generating a vacuum in the treatment chamber, introducing hydrogen into the treatment chamber, providing a pressure ranging between 10?1 and 50 mbar in the treatment chamber and exciting a plasma in the chamber and allowing the hydrogen radicals to act on the components.
    Type: Application
    Filed: November 8, 2005
    Publication date: March 16, 2006
    Inventors: Miran Mozetic, Uros Cvelbar