Patents by Inventor Ari Auvinen

Ari Auvinen 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: 10726981
    Abstract: The present disclosure relates to a method for manufacturing a covalently functionalized coated magnetic nanoparticle and to said particles and uses thereof. The preparation method includes forming a shell of a hydrophilic polymer coating layer on top of a magnetic metal core coated with a carbon coating. In the method a particle comprising a magnetic metal core coated with a carbon coating is provided. The surface of the particle is subjected to covalent functionalization by generating amino reactive groups via diazonium chemistry and subsequently an irreversible attachment of an atom transfer radical polymerization (ATRP) initiator is carried out on said surface. A hydrophilic polymer layer is formed) by a surface initiated atom transfer radical polymerization (SI-ATRP) reaction with a monomer comprising N-isopropylacrylamide (NIPAM).
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: July 28, 2020
    Assignee: Kemira Oyj
    Inventors: Mehrdad Hesampour, Lasse Kyllönen, Ari Auvinen, Adina Anghelescu-Hakala
  • Publication number: 20180268972
    Abstract: The present disclosure relates to a method for manufacturing a covalently functionalized coated magnetic nanoparticle and to said particles and uses thereof. The preparation method includes forming a shell of a hydrophilic polymer coating layer on top of a magnetic metal core coated with a carbon coating. In the method a particle comprising a magnetic metal core coated with a carbon coating is provided. The surface of the particle is subjected to covalent functionalization by generating amino reactive groups via diazonium chemistry and subsequently an irreversible attachment of an atom transfer radical polymerization (ATRP) initiator is carried out on said surface. A hydrophilic polymer layer is formed) by a surface initiated atom transfer radical polymerization (SI-ATRP) reaction with a monomer comprising N-isopropylacrylamide (NIPAM).
    Type: Application
    Filed: September 21, 2016
    Publication date: September 20, 2018
    Applicant: Kemira Oyj
    Inventors: Mehrdad HESAMPOUR, Lasse KYLLÖNEN, Ari AUVINEN, Adina ANGHELESCU-HAKALA
  • Publication number: 20170128808
    Abstract: A method and system for analyzing swimming technique, the method comprising measuring pressure exerted on the hand during a handstroke with at least one pressure sensor (12) attached to a hand of a swimmer; measuring acceleration in three dimensions during the handstroke with at least one acceleration sensor (13) attached to the hand of the swimmer; and calculating from the measured values a profile of the handstroke comprising a quantity and direction of the force during the handstroke.
    Type: Application
    Filed: November 10, 2016
    Publication date: May 11, 2017
    Inventor: Ari AUVINEN
  • Patent number: 9278861
    Abstract: The invention relates to a method for the carbon coating of metallic nanoparticles. The metallic nanoparticles, which are produced using the metal-salt hydrogen-reduction method, can be coated with carbon by adding a hydrocarbon (for example, ethylene, ethane, or acetylene) to the hydrogen using in the synthesis. The carbon layer protects the metallic particles from oxidation, which greatly facilitates the handling and further processing of the particles. By altering the concentration of the hydrocarbon, it is possible, in addition, to influence the size of the metallic particles created, because the coating takes place simultaneously with the creation of the particles, thus stopping the growth process. A carbon coating at most two graphene layers thick behaves like a semiconductor. As a thicker layer, the coating is a conductor. If the hydrocarbon concentration is further increased, a metal-CNT composite material is formed in the process.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: March 8, 2016
    Inventors: Ari Auvinen, Jorma Jokiniemi, Johanna Forsman, Pipsa Mattila, Unto Tapper
  • Patent number: 8617710
    Abstract: The present invention relates to a process for forming cobalt nanoparticles and coating them with copper or copper oxide, in which process a copper salt is mixed to a cobalt salt so that the formed salt mixture obtains a cobalt:copper ratio of >1:1, and a reduction is carried out with a reducing gas, whereby nanoparticles are formed while a coating is formed onto their surface.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: December 31, 2013
    Assignee: Teknologian Tutkimuskeskus VTT
    Inventors: Ari Auvinen, Jorma Jokiniemi, Pipsa Mattila, Unto Tapper
  • Publication number: 20130224490
    Abstract: The present invention relates to a process for forming cobalt nanoparticles and coating them with copper or copper oxide, in which process a copper salt is mixed to a cobalt salt so that the formed salt mixture obtains a cobalt:copper ratio of >1:1, and a reduction is carried out with a reducing gas, whereby nanoparticles are formed while a coating is formed onto their surface.
    Type: Application
    Filed: February 7, 2011
    Publication date: August 29, 2013
    Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT
    Inventors: Ari Auvinen, Jorma Jokiniemi, Pipsa Mattila, Unto Tapper
  • Publication number: 20130009089
    Abstract: The invention relates to a method for the carbon coating of metallic nanoparticles. The metallic nanoparticles, which are produced using the metal-salt hydrogen-reduction method, can be coated with carbon by adding a hydrocarbon (for example, ethylene, ethane, or acetylene) to the hydrogen using in the synthesis. The carbon layer protects the metallic particles from oxidation, which greatly facilitates the handling and further processing of the particles. By altering the concentration of the hydrocarbon, it is possible, in addition, to influence the size of the metallic particles created, because the coating takes place simultaneously with the creation of the particles, thus stopping the growth process. A carbon coating at most two graphene layers thick behaves like a semiconductor. As a thicker layer, the coating is a conductor. If the hydrocarbon concentration is further increased, a metal-CNT composite material is formed in the process.
    Type: Application
    Filed: December 14, 2010
    Publication date: January 10, 2013
    Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT
    Inventors: Ari Auvinen, Jorma Jokiniemi, Johanna Forsman, Pipsa Mattila, Unto Tapper
  • Publication number: 20120272789
    Abstract: By means of the invention, nanoparticles, which can be pure metal, alloys of two or more metals, a mixture of agglomerates, or particles possessing a shell structure, are manufactured in a gas phase. Due to the low temperature of the gas exiting from the apparatus, metallic nanoparticles can also be mixed with temperature-sensitive materials, such as polymers. The method is economical and is suitable for industrial-scale production. A first embodiment of the invention is the manufacture of metallic nanoparticles for ink used in printed electronics.
    Type: Application
    Filed: November 10, 2010
    Publication date: November 1, 2012
    Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT
    Inventors: Ari Auvinen, Jorma Jokiniemi, Unto Tapper, Johanna Forsman, Johannes Roine