Patents by Inventor Mikko Virtanen

Mikko Virtanen 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: 9752284
    Abstract: The invention relates to a method for treating a fiber stock for making of paper, board or the like. The method comprises obtaining a fiber thick stock and adding to the fiber thick stock at least one cationic first agent, and adding separately to the fiber stock and after the addition of the cationic first agent, at least one anionic second agent, which is an water-soluble anionic copolymer of acrylamide, methacrylamide or acrylonitrile, in such amount that the ratio of the added absolute cationic charge to the added absolute anionic charge is from 1:0.1 to 1:0.95. The invention relates also to the product prepared by using a fiber stock, which is treated by using the method.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: September 5, 2017
    Assignee: KEMIRA OYJ
    Inventors: Matti Hietaniemi, Mikko Virtanen, Emmi Saranpää
  • Patent number: 9605382
    Abstract: The invention relates to a process for production of paper or board comprising providing a stock comprising cellulose fibers, adding a mixture comprising microfibrillated cellulose and a strength additive to the stock, adding a microparticle to the stock after the addition of said mixture, dewatering the stock on a wire to form a web, and drying the web.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: March 28, 2017
    Assignee: KEMIRA OYJ
    Inventor: Mikko Virtanen
  • Publication number: 20160319487
    Abstract: The present invention relates to a method for providing a pretreated filler composition for use in paper and board manufacturing including the steps of: a) providing a filler comprising precipitated calcium carbonate, said filler being in the form of a slurry comprising no additives; b) providing at least one polymer selected from polyvinylamine or polyacrylic amide, said polymer having a charge density of an absolute value of at most 4 meq/g determined at pH 7; c) combining said at least one polymer of step b) with the filler of step a); d) providing a slurry of nanofibrillar cellulose; e) combining said nanofibrillar cellulose slurry with the formed combination of step c) and forming a pretreated filler composition comprising aggregates. Further it also relates to a pretreated filler composition prepared therefrom, and its use in stocks, paper and paper board.
    Type: Application
    Filed: December 17, 2014
    Publication date: November 3, 2016
    Inventors: Matti HIETANIEMI, Mikko VIRTANEN, Katariina TORVINEN, Terhi SAARI, Hellen ERKKI
  • Publication number: 20160319485
    Abstract: The present invention relates to a filler aggregate composition comprising filler particles of ground calcium carbonate (GCC); a pretreatment agent selected from polyvinylamine (PVAM) and cationic polyacrylamide (CPAM), or a mixture thereof; and a nanofibrillar cellulose (NFC); wherein said filler aggregate composition is in the form of a slurry, wherein said pretreatment agent has an average molecular weight below 6000000 g/mol and a has a charge density below 7 meq/g, determined at pH 7, and the nanofibrillar cellulose is present in an amount of about 0.1-40% of the dry weight of the filler particles. Further it also relates to its method of production, and its use in stocks, paper and paper board.
    Type: Application
    Filed: December 17, 2014
    Publication date: November 3, 2016
    Inventors: Matti HIETANIEMI, Mikko VIRTANEN
  • Publication number: 20160289896
    Abstract: The invention relates to a method for treating a fibre stock for making of paper, board or the like. The method comprises obtaining a fibre thick stock and adding to the fibre thick stock at least one cationic first agent, and adding separately to the fibre stock and after the addition of the cationic first agent, at least one anionic second agent, which is an water-soluble anionic copolymer of acrylamide, methacrylamide or acrylonitrile, in such amount that the ratio of the added absolute cationic charge to the added absolute anionic charge is from 1:0.1 to 1:0.95. The invention relates also to the product prepared by using a fibre stock, which is treated by using the method.
    Type: Application
    Filed: November 12, 2013
    Publication date: October 6, 2016
    Inventors: Matti Hietaniemi, Mikko Virtanen, Emmi Saranpää
  • Publication number: 20160032530
    Abstract: The invention relates to a process for production of paper or board comprising providing a stock comprising cellulose fibers, adding a mixture comprising microfibrillated cellulose and a strength additive to the stock, adding a microparticle to the stock after the addition of said mixture, dewatering the stock on a wire to form a web, and drying the web.
    Type: Application
    Filed: March 7, 2014
    Publication date: February 4, 2016
    Inventor: Mikko VIRTANEN
  • Patent number: 9080288
    Abstract: The invention relates to a method for producing paper, board or the like. In the method is obtained an aqueous filler dispersion, comprising particles of at least one first filler, the filler dispersion having a floc size distribution with original mean chord length value. The particles of the first mineral filler are brought into a contact with a cationic pre-treatment agent, which is capable of initiating flocculation of the filler particles in the dispersion, whereby a pre-treated filler dispersion comprising flocs, which comprise first mineral particles, is formed. The pre-treated filler dispersion is combined with a stock of fibers. The floc size distribution of the filler dispersion is changed with the pre-treatment agent, which is a natural and/or synthetic polymer, so that the mean chord length value increases at least with 2% from the original mean chord length value.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: July 14, 2015
    Assignee: KEMIRA OYJ
    Inventors: Matti Hietaniemi, Mikko Virtanen, Jonni Ahlgren
  • Publication number: 20140360691
    Abstract: The invention relates to a method for producing paper, board or the like. In the method is obtained an aqueous filler dispersion, comprising particles of at least one first filler, the filler dispersion having a floc size distribution with original mean chord length value. The particles of the first mineral filler are brought into a contact with a cationic pre-treatment agent, which is capable of initiating flocculation of the filler particles in the dispersion, whereby a pre-treated filler dispersion comprising flocs, which comprise first mineral particles, is formed. The pre-treated filler dispersion is combined ed with a stock of fibres. The floc size distribution of the filler dispersion is changed with the pre-treatment agent, which is a natural and/or synthetic polymer, so that the mean chord length value increases at least with 2% from the original mean chord length value.
    Type: Application
    Filed: January 16, 2013
    Publication date: December 11, 2014
    Applicant: KEMIRA OYJ
    Inventors: Matti Hietaniemi, Mikko Virtanen, Jonni Ahlgren
  • Publication number: 20120024488
    Abstract: The invention relates to a supercalendered paper product comprising first cellu-losic fibres and a gypsum-fibre composite product as a filler pigment or coating pigment, wherein the gypsum in the gypsum-fibre composite product appears as crystals on the surface of the fibre, and wherein the gypsum crystals are obtained by contacting calcium sulphate hemihydrate and/or calcium sulphate anhydrite and an aqueous second fibre suspension. The invention also relates to a process for producing a supercalendered paper product.
    Type: Application
    Filed: April 19, 2010
    Publication date: February 2, 2012
    Inventors: Tarja Turkki, Mikko Virtanen
  • Patent number: 7085257
    Abstract: There is disclosed a method and system to provide a wireless terminal online access capability to a system phonebook, such as a WLAN, which calls for instructing the system to start a phonebook application such that for incoming calls the phonebook application commences in response to a phone number identification at the user terminal side and for outgoing calls the phonebook application commences through a User Interface (UI) of the user terminal; and performing a search query of the phonebook database to identify a caller corresponding to a phone number identification of an incoming call and/or at least one of a phone number and person or party of the call to be initiated.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: August 1, 2006
    Assignee: Nokia Corporation
    Inventors: Heidi Karves, Eeva-Liisa Heinonen, Jaakko Itavaara, Kai Kronstrom, Kari Lehtinen, Jari Mononen, Petri Nykänen, Mikko Virtanen
  • Patent number: 6816719
    Abstract: A method and system for making profile information of a plurality of users of wireless terminals in a network accessible to the network. A current operational mode of the wireless terminal is determined. The current operational mode is identified by an operational mode name. The wireless terminal identification is used to identify the wireless terminal and/or a user of the wireless terminal. Profile information of the wireless terminal is sent to the network where the profile information includes the operational mode name and the wireless terminal and/or user identification. The profile information is sent by the wireless terminal and the sent profile information is accessible from the network.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: November 9, 2004
    Assignee: Nokia Corporation
    Inventors: Eeva-Liisa Heinonen, Jaakko Itävaara, Heidi Karves, Kai Kronström, Kari Lehtinen, Jari Mononen, Petri Nykänen, Mikko Virtanen
  • Patent number: 6728530
    Abstract: Calendar display apparatus, and an associated method, displays the calendar display at a mobile terminal operable in a radio communication system. The calendar display includes calendar items retrieved from both a local storage element and from a network-based calendar database. The calendar items are displayed simultaneously. And, calendar items stored locally are exportable to the network database. Analogously, calendar items stored at the network database are downloadable to the mobile station to be stored thereat.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: April 27, 2004
    Assignee: Nokia Corporation
    Inventors: Eeva-Liisa Heinonen, Jaakko Itävaara, Heidi Karves, Kai Kronström, Kari Lehtinen, Jari Mononen, Petri Nykänen, Mikko Virtanen
  • Patent number: 6671370
    Abstract: A telephone system includes a plurality of telephone terminals wherein a call that is placed from a calling telephone terminal to a receiving telephone terminal is announced by activating a standard ringing indication at the receiving telephone terminal. A data file is provided having a plurality of different ringing indications therein. These ringing indications include a plurality of sound information that are both different from each other and different from a standard ringing tone, and a plurality of different visual information. When a call is placed from a calling telephone terminal to a receiving telephone terminal, the user at the calling telephone terminal may optionally elect to announce the call at the receiving-telephone-terminal using ringing indication that is selected from the data-file, for example sound information that indicates the identity of the calling-users, and/or visual information that indicates the priority of the call.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: December 30, 2003
    Assignee: Nokia Corporation
    Inventors: Eeva-Liisa Heinonen, Jaakko Itävaara, Heidi Karves, Kai Kronström, Kari Lehtinen, Jari Mononen, Petri Nykänen, Mikko Virtanen
  • Patent number: 6633758
    Abstract: Methods and devices for modifying operational modes in a communication device based on application specific parameters. The operational modes of the communication device are modified by adding the application specific parameters of the application to the operational modes of the communication device. Further, commands may be automatically launched after an operational mode change in a communication device. One or more commands to be automatically launched when an operational mode becomes a current operational mode currently used by the communication device are entered into the operational mode of a communication device of a user. Whether the current operational mode has any commands to be automatically launched is determined. The one or more commands are automatically launched if the current operational mode has any commands to be automatically launched.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: October 14, 2003
    Assignee: Nokia Corporation
    Inventors: Eeva-Liisa Heinonen, Jaakko It{haeck over (a)}vaara, Heidi Karves, Kai Kronström, Kari Lehtinen, Jari Mononen, Petri Nykänen, Mikko Virtanen