Patents by Inventor Pekka Koivukunnas
Pekka Koivukunnas 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).
-
Publication number: 20240003207Abstract: An inlet tube of a sampling device, a rock drilling rig, and a method for taking samples is provided. The inlet tube is mountable to a dust collecting system of a rock drilling rig and is provided with at least one actively controllable homogenizing element forming a physical element for generating disturbance in flow and to thereby homogenize particle distribution of the drilling cuttings in the flow.Type: ApplicationFiled: June 29, 2023Publication date: January 4, 2024Inventors: Maunu MANTTARI, Pekka KOIVUKUNNAS, Lasse TUOMINEN, Rami RAUTE
-
Publication number: 20240003206Abstract: A homogenizer for homogenizing flow, a rock drilling rig, and a method for taking samples is provided. The homogenizer is mountable to a dust collecting system of the rock drilling rig and is arranged for effecting on the flow, which contains air and drilling cuttings. The homogenizer includes a channel part through which the flow is directed and at least one air jet for directing air blows to the flow for generating disturbance in the flow and to thereby homogenize particle distribution of the drilling cuttings in the flow.Type: ApplicationFiled: June 29, 2023Publication date: January 4, 2024Inventors: Maunu MANTTARI, Pekka KOIVUKUNNAS, Lasse TUOMINEN, Rami RAUTE
-
Patent number: 8105677Abstract: A microstructure area (201) providing a first diffractive visual effect is produced on the surface layer (240) of a paper or cardboard substrate (230) of a product (200). In addition, a bulge (206) or a recess (207) having a second microstructure area (202) is produced on the surface layer (240), wherein a doubly curved portion (203) is located between the first (201) and the second (202) microstructure areas. Said combination of the bulge (206)/recess (207), microstructure areas (201, 202) and doubly curved portion (203) makes counterfeiting of the product (200) difficult and provides a special visual effect.Type: GrantFiled: June 12, 2007Date of Patent: January 31, 2012Assignee: Avantone OyInventors: Pekka Koivukunnas, Harri Kosonen
-
Patent number: 7827907Abstract: Micro-protrusions, which constitute a diffractive microstructure, are produced by embossing the surface layer of a substrate by an embossing member having microgrooves in such a way that the cross-sectional area of a produced micro-protrusion is substantially smaller than the cross-sectional area of the microgroove producing said micro-protrusion. Thus, the embossing pressure is small, the risk of adhesion is reduced, it is possible to use a low embossing temperature, and microstructures may be produced at a high speed. Furthermore, the same embossing member may be used for producing a low microstructure, a normal microstructure, and a high microstructure.Type: GrantFiled: August 5, 2005Date of Patent: November 9, 2010Assignee: Avantone OyInventors: Pekka Koivukunnas, Raimo Korhonen, Matti Koivu
-
Processing device and method of operating the device for processing a coated or uncoated fibrous web
Patent number: 7704351Abstract: A processing device and method applying the same for processing a coated or uncoated fibrous web is provided. The device comprises a belt configured to extend around a guiding element, at least one counter-element being disposed outside said belt to provide a contact area with the belt, such that the belt and the counter-element establish therebetween a web processing zone for passing a web to be processed therethrough. The processing zone length is defined by the disposition of the belt's guiding element and/or by the configuration of the counter-elements. The contact pressure applied to a web in the processing zone is within the range of between about 0.01 MPa and about 200 MPa.Type: GrantFiled: January 29, 2003Date of Patent: April 27, 2010Assignee: Metso Paper, Inc.Inventors: Juha Lipponen, Vilho Nissinen, Pekka Koivukunnas, Mika Viljanmaa, Henri Vaittinen, Reijo Pietikäinen, Kari Hasanen, Risto Sutti, Eero Suomi, Pekka Linnonmaa, Markku Kyytsönen, Matti Tervonen, Heikki Kettunen, Kari Holopainen -
Publication number: 20090237795Abstract: A microstructure area (201) providing a first diffractive visual effect is produced on the surface layer (240) of a paper or cardboard substrate (230) of a product (200). In addition, a bulge (206) or a recess (207) having a second microstructure area (202) is produced on the surface layer (240), wherein a doubly curved portion (203) is located between the first (201) and the second (202) microstructure areas. Said combination of the bulge (206)/recess (207), microstructure areas (201, 202) and doubly curved portion (203) makes counterfeiting of the product (200) difficult and provides a special visual effect.Type: ApplicationFiled: June 12, 2007Publication date: September 24, 2009Applicant: AVANTONE OYInventors: Pekka Koivukunnas, Harri Kosonen
-
Publication number: 20090134534Abstract: Micro-protrusions, which constitute a diffractive microstructure, are produced by embossing the surface layer of a substrate by an embossing member having microgrooves in such a way that the cross-sectional area of a produced micro-protrusion is substantially smaller than the cross-sectional area of the microgroove producing said micro-protrusion. Thus, the embossing pressure is small, the risk of adhesion is reduced, it is possible to use a low embossing temperature, and microstructures may be produced at a high speed. Furthermore, the same embossing member may be used for producing a low microstructure, a normal microstructure, and a high microstructure.Type: ApplicationFiled: August 5, 2005Publication date: May 28, 2009Applicant: Avantone OyInventors: Pekka Koivukunnas, Raimo Korhonen, Matti Koivu
-
Publication number: 20090011190Abstract: A bare diffractive microstructured area on a product is protected against wearing by one or more protruding elements. In an embodiment, the product is provided with a depression, whose bottom is further provided with a diffractive microstructured area. Thus, the rim areas of the depression form a protruding element with respect to the microstructured area. If the product is rubbed, for example, against the surface of a table, the protruding element prevents the rubbing surface from having a physical contact with the microstructured area. The microstructured area does not need to be protected with a transparent protective layer, which entails significant cost savings.Type: ApplicationFiled: September 28, 2005Publication date: January 8, 2009Applicant: Avantone OyInventors: Pekka Koivukunnas, Jani-Mikael Kuusisto
-
Publication number: 20080302255Abstract: A method and a device for producing a diffractive microstructured area on the surface layer of a substrate by embossing. The device includes a die-cutting press that includes a press member and a backing member and at least one die-cutting tool arranged for die-cutting the substrate placed between the press member and the backing member. The press member and/or the backing member is provided with at least embossing pattern corresponding to the microstructured area, against which pattern the substrate is pressed during the embossing, when the substrate is introduced between the press member and the backing member for the embossing. A method for converting a die-cutting press to a die-cutting and embossing device for producing a diffractive microstructured area on the surface layer of a substrate by embossing, wherein the press member and/or the backing member of the die-cutting press is provided with at least one embossing pattern corresponding to the microstructured area for embossing.Type: ApplicationFiled: January 17, 2006Publication date: December 11, 2008Applicant: Avantone OyInventor: Pekka Koivukunnas
-
Publication number: 20080251956Abstract: A diffractive microstructure is produced on the surface layer of a substrate using an embossing device. The embossing device includes an embossing roll and a backing roll for exerting an embossing pressure on the surface layer of the substrate. The embossing pressure and/or variations in temperature cause deflection of the embossing roll. To compensate for the deflection, the embossing device can set the embossing pressure exerted by the central area of the embossing roll on the surface layer of the substrate to be at least equal to or higher than the embossing pressure exerted by the end areas of the embossing roll on the surface layer of the substrate.Type: ApplicationFiled: August 5, 2005Publication date: October 16, 2008Applicant: AVANTONE OYInventors: Raimo Korhonen, Pekka Koivukunnas
-
Patent number: 7430982Abstract: The present invention relates to time-temperature integrating indicators, also known as TTI indicators, which are easily printable on substrates, such as packaging materials, and to a method for the manufacture of packaging materials comprising printed TTI indicators. The printed TTI indicator is selectively activated at the time of packaging of a perishable product or alternatively at the time of opening of the package of a perishable product.Type: GrantFiled: February 25, 2004Date of Patent: October 7, 2008Assignee: Avantone OyInventors: Pekka Koivukunnas, Eero Hurme
-
Publication number: 20080122129Abstract: A micro-optical grid structure is produced on a surface layer of a substrate by an embossing device and method. The embossing device includes an embossing member and a backing member, a temperature adjuster for adjusting the embossing temperature and a pressure adjuster for adjusting the pressure exerted by the embossing member and the backing member to the surface layer of the substrate. An optical measuring device is arranged to produce a diffraction signal dependent on the intensity of light diffracted from the surface of the substrate. The embossing pressure and/or temperature is/are adjusted on the basis of the diffraction signal to produce an optimal and even pattern depth of the grid structure. With the adjustment based on the diffraction signal, it is possible to avoid the sticking of the surface of the substrate to the embossing member due to too high an embossing temperature. When the pattern depth is optimal, collapse of the substrate caused by the too high embossing pressure is avoided.Type: ApplicationFiled: August 5, 2005Publication date: May 29, 2008Inventors: Pekka Koivukunnas, Raimo Korhonen, Markku Mantyla, Antti Kemppainen, Juha Sumen
-
Publication number: 20080012151Abstract: A method for manufacturing an electronic thin-film component, an apparatus implementing the method, and an electronic thin-film component manufactured according to the method. A lowermost, galvanically uniform conductive layer of electrically conductive material is first formed on a substantially dielectric substrate, from which lowermost conductive layer conductive areas are galvanically separated from each other to form an electrode pattern. On top of the electrode pattern it is then possible to form one or several upper passive or active layers required in the thin-film component. The separation of the lowermost conductive layer into an electrode pattern takes place by exerting on the lowermost conductive layer a machining operation based on die-cut embossing, i.e.Type: ApplicationFiled: June 18, 2004Publication date: January 17, 2008Applicant: AVANTONE OYInventors: Antti Kemppainen, Terho Kololuoma, Markus Tuomikoski, Raimo Korhonen, Pasi Laakkonen, Pekka Koivukunnas
-
Publication number: 20070194126Abstract: The invention relates to decoding digital information, where a surface of an object is illuminated with a first optical illumination from a first direction, the surface comprising microscopic embossed data units encoding digital information. A first primary digital microscopic image is recorded from the microscopic embossed data units with the first optical illumination. The surface is further illuminated with a second optical illumination from a second direction different from the first direction, and a second primary digital microscopic image is recorded from the microscopic embossed data units with the second optical illumination. A secondary digital microscopic image of the microscopic embossed data units is generated from the first primary digital microscopic image and the second primary digital microscopic image, and at least a part of the digital information is generated from the secondary digital microscopic image.Type: ApplicationFiled: February 6, 2006Publication date: August 23, 2007Inventors: Karri Niemela, Heimo Keranen, Pekka Koivukunnas
-
Patent number: 7235157Abstract: The invention relates to a method for controlling a surface quality variable (300) in one or more fiber webs (3) in a shoe calender (1) comprising one or more calender nips. In each calender nip of the shoe calender, the overall loading pressure of the shoe element (8) and the loading pressure difference between the leading edge (8?) and the trailing edge (8?) of the shoe element are controlled so as to achieve minimum difference between the determined values (300?) for the surface quality variables of the fiber web and the set values (300?) for the same quality variables after the shoe calender.Type: GrantFiled: August 23, 2001Date of Patent: June 26, 2007Assignee: Metso Paper, Inc.Inventors: Tapio Mäenpää, Kalle Hasu, Matti Lares, Pekka Koivukunnas
-
Patent number: 7179349Abstract: A web (W) is passed from a preceding treatment stage to a finishing device in which the web (W) is finished in the finishing device and from which finishing device the web (W) is passed further to a subsequent treatment stage. The web (W) is brought to a roll (11; 14) of the finishing device as supported substantially before a nip area (N1; N2). The web (W) is passed from the circumference of a roIl (12; 15) of the finishing device as substantially supported afler the nip area (N1; N2). A device for passing a web in connection with a finishing device of a paper machine causes a web (W) to be brought by the device to the circumference of a roll (11; 14) of the finishing device substantially before a nip area (N1; N2) and/or the web (W) can be passed from the circumference of a roll (12; 15) of the finishing device substantially after the nip area (N1; N2).Type: GrantFiled: November 21, 2001Date of Patent: February 20, 2007Assignee: Metso Paper, Inc.Inventor: Pekka Koivukunnas
-
Publication number: 20060286304Abstract: The invention relates to a method for producing metal conductors, for instance copper conductor patterns as electronic components on a substrate, such as paper. Said method is particularly suitable for producing metal conductors on papers for large scale mass production using printing or like machines. In the method, an electroless deposition is carried out in at least two steps wherein a solution is made of one of the metallic starting material or the reducing agent, or the other one is present in a gas or vapour form, followed by successive application thereof on the substrate.Type: ApplicationFiled: May 28, 2004Publication date: December 21, 2006Inventors: Markku Leskela, Seppo Lindroos, Hanna Uusikartano, Pekka Koivukunnas
-
Publication number: 20060130734Abstract: The present invention relates to time-temperature integrating indicators, also known as TTI indicators, which are easily printable on substrates, such as packaging materials, and to a method for the manufacture of packaging materials comprising printed TTI indicators. The printed TTI indicator is selectively activated at the time of packaging of a perishable product or alternatively at the time of opening of the package of a perishable product.Type: ApplicationFiled: February 25, 2004Publication date: June 22, 2006Applicant: AVANTONE OYInventors: Pekka Koivukunnas, Eero Hurme
-
Publication number: 20060103130Abstract: A method for specifying products to be sold, in which a plurality of mutually substantially identical products and/or their packages are equipped each with an optical diffraction element of its own. The element gives the same visual impression in each product or its package. In addition to the product and/or its package, the material relating to the distribution or sales of the product is also equipped with an optical diffraction element giving the same visual impression as the optical diffraction element on the product or its package. The material may also be equipped with an element simulating this visual impression.Type: ApplicationFiled: November 12, 2004Publication date: May 18, 2006Inventors: Pekka Koivukunnas, Jani-Mikael Kuusisto
-
Patent number: 7037407Abstract: A paper web is calendered by passing the paper web through a nip formed by a heatable thermo roll and a backing roll. The surface temperature of the thermo roll is above the glass transition range of the paper.Type: GrantFiled: April 16, 2002Date of Patent: May 2, 2006Assignee: Metso Paper, Inc.Inventors: Pekka Koivukunnas, Kaj Fabritius