Patents by Inventor Darko Pervan

Darko Pervan 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: 12636812
    Abstract: A continuous press arrangement for manufacture of building panels, such as floor or wall panels, comprises an upper rotatable inlet drum connecting to an upper rotatable outlet drum via an upper continuous press belt and a lower rotatable inlet drum connecting to a lower rotatable outlet drum via a lower continuous press belt. The press belts are configured to form a product path therebetween for feeding a product in a feeding direction in response to rotation of said drums or displacement of the press belt(s). An upper and a lower press table each comprise a cushion configured to be displaced into sealing abutment with the press belt for facilitating a pressure zone. The inlet drums form respective angles phi between the respective press belts and the product path at a position being downstream the inlet drums and upstream the pressure cushion or press table, in the feeding direction.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: May 26, 2026
    Assignee: VÄLINGE INNOVATION AB
    Inventors: Hans Persson, Darko Pervan, Magnus Nilsson
  • Patent number: 12532987
    Abstract: Methods and equipment to apply a decorative surface on a building panel wherein the surface includes a mix of fibres, binders, wear resistant particles and pigments. Layers may be applied as separate layers with equipment that applies essentially only one of the materials in the surface mix. A method of forming a surface layer on a substrate, the method including forming a first layer of a first material, applying a second layer of a second material on the first layer, mixing the first and second layers into a mix comprising the first and the second material, and applying the mix on a substrate for forming a surface layer.
    Type: Grant
    Filed: January 11, 2024
    Date of Patent: January 27, 2026
    Assignee: CERALOC INNOVATION AB
    Inventor: Darko Pervan
  • Patent number: 12521955
    Abstract: A continuous press arrangement for manufacture of building panels, such as floor or wall panels, includes upper and lower press belts configured to form a product path therebetween for feeding a product in a feeding direction in response to rotation of one or more drums. An upper and a lower press table each include a displaceable pressure cushion configured to facilitate a pressure zone extending along at least a portion of said path. At least one of the press tables includes one or more pressure bars disposed upstream and/or downstream the pressure cushion, in the feeding direction. The one or more pressure bars are configured to apply a pressure to the upper press belt and/or the lower press belt respectively in a direction towards the product path.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: January 13, 2026
    Assignee: VÄLINGE INNOVATION AB
    Inventors: Hans Persson, Darko Pervan, Magnus Nilsson
  • Patent number: 12509884
    Abstract: Floor panels which are provided with a mechanical locking system including a displaceable tongue in a displacement groove. The tongue is moulded and provided with bendable protrusions. A building panel having an edge portion provided with a groove, in which a tongue formed as a separate part is received, wherein the tongue includes at least two bow shaped protrusions at a first long edge of the tongue, and wherein the protrusions are arranged bendable in the groove.
    Type: Grant
    Filed: May 5, 2023
    Date of Patent: December 30, 2025
    Assignee: VÄLINGE INNOVATION AB
    Inventors: Darko Pervan, Agne Palsson
  • Patent number: 12454122
    Abstract: A building panel with a surface layer including a wood veneer, a wood fibre based core and a sub-layer between the surface layer and the core. The sub-layer includes wood fibres and a binder. The surface layer has surface portions including material from the sub-layer. The surface portions including material from the sub-layer extend into the wood veneer.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: October 28, 2025
    Assignee: VÄLINGE INNOVATION AB
    Inventors: Darko Pervan, Göran Ziegler
  • Publication number: 20250257574
    Abstract: Building panels, especially laminated floor panels are shown, which are provided with a locking system and several core grooves at the rear side in order to save material and decrease weight. Building panels, each having a surface layer on a front side, a backing layer on a rear side and an intermediate core, wherein the intermediate core and the surface and the backing layer all comprise wood fibres and thermosetting resins, the building panels are provided with a locking system for vertical and horizontal locking of a first edge of a first building panel to an adjacent second edge of a second building panel.
    Type: Application
    Filed: March 5, 2025
    Publication date: August 14, 2025
    Applicant: Ceraloc Innovation AB
    Inventor: Darko PERVAN
  • Publication number: 20250230670
    Abstract: Building panels provided with a locking system for vertical and horizontal locking of a first edge and a second edge of adjacent panels. The locking system includes a displaceable tongue at least partly arranged in a displacement groove, a tongue groove, a cavity provided in a strip at the first edge, and a protrusion extending downwards at the second edge. The displaceable tongue is arranged to be displaced at least partly into the tongue groove during locking, and wherein the protrusion is arranged to be located in least a portion of the cavity when the panels are locked vertically and horizontally.
    Type: Application
    Filed: December 23, 2024
    Publication date: July 17, 2025
    Applicant: Ceraloc Innovation AB
    Inventor: Darko PERVAN
  • Patent number: 12318808
    Abstract: A method, a panel and equipment to form a digital print by applying dry ink, preferably including particles of pigment coated wood fibres, on a surface, bonding a part of the particles with a liquid blank ink drops and removing the non-bonded particles from the surface. A panel having a surface with a wood grain décor, the panel including a first surface portion that is formed by a continuous basic layer including wood fibres having a first color, and a second surface portion that is formed by wood fibres having a second color, wherein the wood fibres having the second color are applied on and bonded to the continuous basic layer, and wherein the second surface portion covers a part of the first surface portion.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: June 3, 2025
    Assignee: CERALOC INNOVATION AB
    Inventors: Darko Pervan, Tony Pervan
  • Patent number: 12311572
    Abstract: A continuous press arrangement for manufacture of building panels comprises an upper rotatable inlet drum connected to an upper rotatable outlet drum via an upper continuous press belt, and a lower rotatable inlet drum connected to a lower rotatable outlet drum via a lower continuous press belt. The upper and lower press belts form a product path therebetween for feeding a product in response to rotation of one or more of the drums. Upper and lower press tables each comprise a displaceable pressure cushion extending along at least a portion of the path and facilitate a pressure zone between the press table and the press belt. The press table comprises a displacement groove and the pressure cushion is configured to be at least partially received in the displacement groove. The pressure cushion comprises a friction seal element configured to be in contact with the press belt.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: May 27, 2025
    Assignee: VÄLINGE INNOVATION AB
    Inventors: Hans Persson, Darko Pervan, Magnus Nilsson
  • Patent number: 12276293
    Abstract: Panels are shown which are provided with a mechanical locking system allowing perpendicular connection with a snap action. A set of panels including a first and a second panel, an edge of the second panel is insertable into a groove of the first panel, when the panels are arranged essential perpendicular to each other, to obtain a mechanical connection between the first and the second panel, when the second panel is displaced essentially perpendicularly to the first panel.
    Type: Grant
    Filed: August 30, 2023
    Date of Patent: April 15, 2025
    Assignee: VÄLINGE INNOVATION AB
    Inventors: Niclas Håkansson, Darko Pervan
  • Patent number: 12264482
    Abstract: Building panels, especially laminated floor panels are shown, which are provided with a locking system and several core grooves at the rear side in order to save material and decrease weight. Building panels, each having a surface layer on a front side, a backing layer on a rear side and an intermediate core, wherein the intermediate core and the surface and the backing layer all comprise wood fibres and thermosetting resins, the building panels are provided with a locking system for vertical and horizontal locking of a first edge of a first building panel to an adjacent second edge of a second building panel.
    Type: Grant
    Filed: August 30, 2023
    Date of Patent: April 1, 2025
    Assignee: CERALOC INNOVATION AB
    Inventor: Darko Pervan
  • Publication number: 20250092688
    Abstract: Floor panels are shown, which are provided with a mechanical locking system on long and short edges allowing installation with vertical snap folding that could be accomplished automatically without tools and where the short edge locking system has a tongue made in one piece with the panel. The floor panels may have a first and a second connector at the long edges that are configured to obtain a minimum of friction facilitating a displacement, by a spring back force from the bending of a short edge locking strip, of a new panel in a horizontal direction along the long edge during the vertical snap folding action.
    Type: Application
    Filed: April 10, 2024
    Publication date: March 20, 2025
    Applicant: Välinge Innovation AB
    Inventors: Darko PERVAN, Marcus STÅHL
  • Patent number: 12209417
    Abstract: Building panels provided with a locking system for vertical and horizontal locking of a first edge and a second edge of adjacent panels. The locking system includes a displaceable tongue at least partly arranged in a displacement groove, a tongue groove, a cavity provided in a strip at the first edge, and a protrusion extending downwards at the second edge. The displaceable tongue is arranged to be displaced at least partly into the tongue groove during locking, and wherein the protrusion is arranged to be located in least a portion of the cavity when the panels are locked vertically and horizontally.
    Type: Grant
    Filed: April 4, 2023
    Date of Patent: January 28, 2025
    Assignee: CERALOC INNOVATION AB
    Inventor: Darko Pervan
  • Patent number: 12172186
    Abstract: A method and equipment to form a digital print by applying dry colourants on a surface of a panel, bonding a part of the colourants with a binder and removing the non-bonded colourants from the surface. The method of forming a digital print on a surface of a panel includes displacing the panel under a digital drop application head, applying a liquid binder with the digital drop application head on the surface; applying colourants on the liquid binder and the surface; bonding a part of the colourants to the surface with the liquid binder; removing non-bonded colourants from the surface such that a digital print is formed by the bonded colourants; and applying heat and pressure on the panel, the surface and the bonded colorants such that the colourants are permanently bonded to the surface.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: December 24, 2024
    Assignee: CERALOC INNOVATION AB
    Inventors: Darko Pervan, Tony Pervan
  • Publication number: 20240417981
    Abstract: Ceramic and stone tiles are shown, which are provided with a locking system including a separate strip part connected to vertical and horizontal grooves formed in the tile edge. A set of ceramic or stone tiles including a first tile provided with a first edge and a second tile provided with a second edge wherein the tiles are provided with a locking system for locking the first edge to the second edge in a horizontal direction parallel with a tile surface and in a vertical direction perpendicular to the horizontal direction, said locking system includes a first and a second tongue and a strip part provided with a first and a second locking element.
    Type: Application
    Filed: July 16, 2024
    Publication date: December 19, 2024
    Applicant: Ceraloc Innovation AB
    Inventor: Darko PERVAN
  • Publication number: 20240368897
    Abstract: Building panels, such as floor panels, including a locking device. The locking device includes a protrusion and a groove configured to cooperate for vertical locking of a first edge portion of a first building panel to an adjacent second edge portion of a second building panel. The locking device further includes a separate tongue arranged in an insertion groove and a recess configured to cooperate for horizontal locking of the first and the second edge portions. The first and second edge portions are configured to be assembled by a relative essentially horizontal displacement and/or by angling. The insertion groove is provided vertically below at least one horizontal plane extending along a vertical locking surface provided in a third edge portion of the first building panel.
    Type: Application
    Filed: July 16, 2024
    Publication date: November 7, 2024
    Applicant: Välinge Innovation AB
    Inventors: Caroline LANDGÅRD, Marcus STÅHL, Darko PERVAN
  • Publication number: 20240342948
    Abstract: A building panel including a multi-layered substrate having a back side layer with lignocellulosic particles and a binder, an intermediate layer with lignocellulosic particles and a binder, arranged on the back side layer, and a front side layer with lignocellulosic particles and a binder, arranged on the intermediate layer. The building panel further includes a front side wood veneer element attached to the front side layer of the multi-layered substrate, and a balancing element attached to the back side layer of the multi-layered substrate. The back side layer was formed from a first mixture, the intermediate layer was formed from a second mixture and the front side layer was formed from a third mixture where lignocellulosic particles from the second mixture and lignocellulosic particles from the third mixture are mixed, at least in a border area between the intermediate layer and the front side layer.
    Type: Application
    Filed: April 17, 2024
    Publication date: October 17, 2024
    Applicant: Välinge Innovation AB
    Inventors: Darko PERVAN, Hans PERSSON, Christer LUNDBLAD, Mattias SVENSSON, Jan JACOBSSON, Georg VETTER
  • Publication number: 20240342949
    Abstract: A building panel, such as a floor panel, or wall panel, having a multi-layered substrate including a back side layer comprising lignocellulosic particles and a binder, an intermediate layer including lignocellulosic particles and a binder which is arranged on the back side layer, and a front side layer including lignocellulosic particles and a binder, and which is arranged on the intermediate layer. The back side layer was formed from a first mixture, the intermediate layer was formed from a second mixture and the front side layer was formed from a third mixture. The building panel further has a mechanical locking device arranged along at least one edge portion of the building panel where the mechanical locking device is configured for horizontal and/or vertical locking of similar or essentially identical building panels in an assembled position.
    Type: Application
    Filed: April 17, 2024
    Publication date: October 17, 2024
    Applicant: Välinge Innovation AB
    Inventors: Darko PERVAN, Hans PERSSON, Christer LUNDBLAD, Mattias SVENSSON, Jan JACOBSSON, Georg VETTER
  • Patent number: 12097689
    Abstract: A method for forming of a building panel with a surface including a thermosetting resin such that tension created during curing of the surface is reduced or eliminated. Method for producing a panel with a wood based core and a surface layer including a thermosetting resin wherein the method including: curing and connecting the surface layer to the core while applying heat and pressure in a first main pressing step, thus raising a temperature of the surface layer above an initial temperature; applying a bending force on the panel after the first main pressing step to bend the panel such that an uppermost surface of the panel is convex an a lowermost surface of the panel is concave while the panel is still above the initial temperature; and releasing the bending force such that the panel springs back to an essentially flat shape.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: September 24, 2024
    Assignee: CERALOC INNOVATION AB
    Inventors: Darko Pervan, Tony Pervan
  • Patent number: 12077968
    Abstract: Ceramic and stone tiles are shown, which are provided with a locking system including a separate strip part connected to vertical and horizontal grooves formed in the tile edge. A set of ceramic or stone tiles including a first tile provided with a first edge and a second tile provided with a second edge wherein the tiles are provided with a locking system for locking the first edge to the second edge in a horizontal direction parallel with a tile surface and in a vertical direction perpendicular to the horizontal direction, said locking system includes a first and a second tongue and a strip part provided with a first and a second locking element.
    Type: Grant
    Filed: July 13, 2022
    Date of Patent: September 3, 2024
    Assignee: CERALOC INNOVATION AB
    Inventor: Darko Pervan