Patents Assigned to Teknologian Tutkimuskeskus VTT Oy
  • Growing medium structures based on moss and method for the manufacture thereof
    Patent number: 10701873
    Abstract: The invention relates to growing medium structures comprising Sphagnum moss, to a foam-laid method for their manufacture and to the use thereof in horticulture, landscaping and forestry applications.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: July 7, 2020
    Assignees: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY, LUONNONVARAKESKUS
    Inventors: Ari Erkkilä, Kirsi Immonen, Karita Kinnunen, Antti Oksanen, Risto Tahvonen, Liisa Särkkä, Juha Näkkilä, Tuomo Hjelt, Kari Jokinen
  • Device for an electrochemical cell
    Patent number: 10700363
    Abstract: The present invention relates to a device for an electrochemical cell, comprising a first layer of substrate material having a plurality of first hydrophilic areas of the substrate and at least one hydrophobic area separating said first hydrophilic areas, the first layer of substrate material comprising at least two first electrodes made on at least two first hydrophilic areas; a second layer of substrate material having a plurality of second hydrophilic areas of the substrate and at least one hydrophobic area separating said second hydrophilic areas, the second layer of substrate material comprising at least two second electrodes made on at least two second hydrophilic areas; and one or more electrical conductors connected to at least two of said first electrodes.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: June 30, 2020
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Saara Tuurala, Eero Hurme, Anu Vaari
  • Sensor and a sensor system
    Patent number: 10673537
    Abstract: The invention relates to a sensor and a system for measuring pressure, variation in sound pressure, a magnetic field, acceleration, vibration, or the composition of a gas. The sensor comprises an ultrasound transmitter, a cavity, and a passive sensor element. In accordance with the invention the sensor includes antenna means for receiving radio frequency signals (f1, f2), and connecting means connecting the antenna to the ultrasound transmitter for using the radio frequency signals for providing energy for driving the ultrasound transmitter.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: June 2, 2020
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Heikki Seppa, Teuvo Sillanpaa, Ville Viikari
  • Self-tuned mass damper and system comprising the same
    Patent number: 10655699
    Abstract: A simple self-tuned mass damper is hereby proposed for a broadened frequency band and which can be adapted to large and expensive structures as well as small and inexpensive structures alike. The novel self-tuned mass damper includes an auxiliary mass and a non-linear suspension, which is configured to connect the auxiliary mass to a vibrating structure. The mass of the auxiliary mass and the stiffness of the non-linear suspension are selected such that the natural frequency is at least 6 Hz and that the amplitude of the relative displacement of the auxiliary mass in respect to the vibrating structure is at most 12 mm.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: May 19, 2020
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Jarkko Keinänen, Kalle Vehviläinen
  • Apparatus, method, and computer program code for producing composite image
    Patent number: 10650488
    Abstract: Apparatus, method, and computer program code for producing composite image. A method comprises: obtaining (150) a first image (130) with first depth information; obtaining (152) a second image (132) with second depth information; detecting (154) regions of interest in the first image (130); segmenting (156) the regions of interest into individual layers; performing (158) image compensation for the individual layers according to the first depth information so that in image compensated individual layers a perspective and/or a viewpoint of the first image (130) is modified to be more similar with the second image (132); and rendering (160) the image compensated individual layers with the second image (132) utilizing the first depth information and the second depth information in order to produce a composite image (134).
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: May 12, 2020
    Assignee: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
    Inventors: Tatu Harviainen, Charles Woodward
  • Methods relating to monitoring fuel cells
    Patent number: 10622651
    Abstract: The invention relates to a method of determining water accumulation in and or removal from a fuel cell, the method comprising circulating fuel gas in the anode side of the fuel cell for producing electric energy in a fuel cell process, providing at least two purge pulses from the fuel circulation, analyzing the composition and/or volume of purged gas of said at least two gas purge pulses for determining the amount of water accumulation in and/or removal from the fuel cell.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: April 14, 2020
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Jari Ihonen, Kaj Nikiforow, Henri Karimäki, Timo Keränen
  • METHOD AND APPARATUS FOR PURIFYING GAS
    Publication number: 20200078730
    Abstract: A method and apparatus for purifying gas where gas is treated in a multistage treatment having at least two ejector stages, a motive medium including liquid, steam or gaseous agent at high pressure injected by an ejector of the ejector stage, and the gas is sucked into the same ejector and mixed with the motive medium for forming a mixture, at least a part of gas and/or liquid phase of the mixture is supplied to a second ejector stage having so that a second motive medium which includes liquid, steam or gaseous agent is injected to the ejector and the gas and/or the liquid phase is sucked into the same ejector in which the gas and/or liquid phase is mixed with the second motive medium for forming a second mixture, at least one of the mixtures includes an additive for removing impurities of the gas, and a purified gas is formed.
    Type: Application
    Filed: May 9, 2018
    Publication date: March 12, 2020
    Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
    Inventors: Kristian MELIN, Pekka SIMELL, Esa KURKELA, Marjut SUOMALAINEN
  • APPARATUS AND METHOD FOR CLEANING A STREAM
    Publication number: 20200061513
    Abstract: An apparatus and a method for cleaning a stream. The apparatus having at least one hot filtration device, which includes a filter vessel and at least one filter candle located inside the filter vessel, an inlet of medium in an upper part of the filter vessel for supplying the medium including particles to the filter vessel, an outlet of the medium in the bottom part for discharged the medium from the filter vessel, a moving bed including the medium which is arranged in the vessel so that the filter candle is inside the moving bed, at least one feed inlet for supplying the stream to the filter vessel, and at least one gas outlet for supplying a purified gas out from the filter vessel.
    Type: Application
    Filed: May 9, 2018
    Publication date: February 27, 2020
    Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
    Inventors: Sampo RATINEN, Yrjo SOLANTAUSTA, Matti NIEMINEN, Christian LINDFORS, Anssi KALLI
  • METHOD AND ARRANGEMENT FOR AN ELLIPTICAL DIPOLE ANTENNA
    Publication number: 20200058999
    Abstract: A dipole antenna, comprising: a radiating element comprising two elliptical electrically conductive patterns arranged on a first plane, a ground plane element comprising a coupling aperture, the ground plane element arranged on a second plane spaced apart from the first plane, a feed element, said radiating element being electromagnetically coupled to the feed element via said via said coupling aperture in the ground plane element.
    Type: Application
    Filed: October 23, 2017
    Publication date: February 20, 2020
    Applicant: Teknologian Tutkimuskeskus VTT Oy
    Inventor: Antti LAMMINEN
  • Decoupling antenna elements
    Patent number: 10516467
    Abstract: According to an example embodiment, there is provided an apparatus comprising circuitry configured to derive at least two outputs, wherein each output comprises a sum of at least two intermediate signals, the circuitry being configured to derive each intermediate signal by applying a coefficient to a signal received from an antenna element, each output corresponding to an antenna beam, and at least one processing core configured to select from a preconfigured plurality of coefficient sets a first set of coefficients, and to provide the selected first set of coefficients to the circuitry for use in deriving the intermediate signals, the selection being based at least in part on an operating condition relating to the apparatus. The coefficients may be chosen to decrease a correlation between the antenna elements, for example.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: December 24, 2019
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Arto Hujanen, Päivi Koivisto, Jouko Aurinsalo
  • Method for forming catalytic nanocoating
    Patent number: 10500580
    Abstract: Provided is a method forming a catalytic nanocoating on a surface of a metal plate, wherein the method comprises pretreating the surface of the metal plate by means of heat treatment at 500-800° C., forming a metaloxide support by washcoating on the surface of the metal plate, and coating the surface of the metal plate by depositing catalytically active metals and/or metaloxides on the metaloxide support by means of an atomic layer deposition (ALD) method in order to form a thin and conformal catalyst layer on the metal plate. Further, the invention relates to a catalyst and a use.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: December 10, 2019
    Assignee: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
    Inventors: Pekka Simell, Matti Reinikainen, Matti Putkonen, Johanna Kihlman
  • Mirror plate for a fabry-perot interferometer and a fabry-perot interferometer
    Patent number: 10495514
    Abstract: A method for producing a mirror plate for a Fabry-Perot interferometer includes providing a substrate, which includes silicon, implementing a semi-transparent reflective coating on the substrate, forming a passivated region in and/or on the substrate by etching a plurality of voids in the substrate, and by passivating the surfaces of the voids, forming a first sensor electrode on top of the passivated region, and forming a second sensor electrode supported by the substrate.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: December 3, 2019
    Assignee: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
    Inventors: Aapo Varpula, Mika Prunnila, Kestutis Grigoras
  • Method and system for eliminating reverse current decay in fuel cells
    Patent number: 10483569
    Abstract: The invention relates to a system and a method for eliminating reverse current decay in the fuel cells. According to the invention, the system comprises a fuel cell having an anode and a cathode; a fuel feed system for supplying the anode of the fuel cell with fuel and forming an anode system; a bypass line fitted in parallel and in flow connection with said anode system and capable of circulating fuel past the anode; an oxygen reduction unit; and a pressure unit for circulating gas in at least part of said anode system and said bypass line. The bypass line is adapted to receive and circulate a flow of hydrogen during a fuel cell shutdown in order to mix the hydrogen with any oxygen present in the anode system, and to remove the oxygen from the anode system in said oxygen reduction unit by catalytic conversion.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: November 19, 2019
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventor: Jari Ihonen
  • Production of high performance thermoplastic composites
    Patent number: 10449694
    Abstract: The present invention concerns a process for producing a thermoformable porous web using a mixture of cellulosic fibers and one or more thermoplastic materials, particularly by foam forming said mixture into a composite foam, and applying the foam into one or more layers on a support to obtain a porous pre-form web. The thus produced porous composite web can be further processed by compression molding to give a rigid high-strength composite structure, which is suitable for use in producing, e.g. panels or plates, packages or hygiene products, insulators or filters, or printed intelligence, electronics or microcellulose products.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: October 22, 2019
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Antti Ojala, Kalle Nättinen, Lisa Wikström, Hannu Minkkinen, Petri Jetsu, Jani Lehmonen, Karita Kinnunen, Tuomo Hjelt
  • Method and apparatus for producing a chemical compound and the produced chemical compound
    Patent number: 10442998
    Abstract: A method and an apparatus for producing a chemical compound from biomass based raw material. The bio-mass based raw material is gasified in a gasification device for forming a gasification gas, the gasification gas is treated in the reactor which includes at least one catalyst layer including Fe-based catalyst for forming a hydrocarbon composition, at least one hydrocarbon fraction including olefins is recovered from the hydrocarbon composition, and a chemical compound is formed from the hydrocarbon fraction. Further, the invention relates to the produced chemical compound.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: October 15, 2019
    Assignee: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
    Inventors: Matti Reinikainen, Janne Hulkko
  • Blank suitable for use as a body of a supercapacitor, a supercapacitor, and a method of manufacturing a porous silicon volume
    Patent number: 10410798
    Abstract: A blank suitable for use as a body of a supercapacitor comprises a first porous semiconductor volume and a second porous semiconductor volume, the second porous semiconductor volume laterally surrounded by the first porous semiconductor volume and separated from it by a trench that is suitable for receiving an electrolyte, whereby the first and second porous semiconductor volume comprise channels opening to the trench. A supercapacitor comprises a body formed by using the blank according to any one of the preceding claims, so that the first porous semiconductor volume acts as one electrode and the second porous semiconductor volume acts as another electrode, with an electrolyte in the trench.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: September 10, 2019
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Jouni Ahopelto, Grigoras Kestutis, Leif Grönberg, Mika Prunnila
  • Optically controlled phase shifter
    Patent number: 10411345
    Abstract: To increase efficiency of optical control of phase shifting elements, arrangements comprising optical lenses are presented. The optical lenses may be arranged in reflective arrays so as to focus light from a light source on a phase shifting element, which may be placed in a feed point of an antenna, such as for example a lithographic antenna. In some embodiments, thus both optical controlling radiation and radio frequency, RF, power are concentrated in substantially the same place.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: September 10, 2019
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventor: Arttu Luukanen
  • Cellulose based functional composites, energy storage devices and manufacturing methods thereof
    Patent number: 10396328
    Abstract: Document discloses new technologies for utilizing cellulose based materials in composites and electrically functionalized structures, such as energy storage devices. The object of the invention is achieved by means of high consistency fibrillated cellulose with at least one functional additive. This high consistency mixture is processed to form the composite structure having a shape and then dried or let to dry.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: August 27, 2019
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Vesa Kunnari, Otto-Ville Kaukoniemi
  • Low volume multipass cell
    Patent number: 10337981
    Abstract: A multipass cell, includes a body; a cavity formed within the body; a first spherical or toroidal mirror at a first end of the cavity; and a second spherical, toroidal or cylindrical mirror at the opposite end of the cavity. The first mirror and the second mirror are configured to reflect a beam entering the cavity next to an outer edge of the first or the second mirror a predetermined number of times so that the beam propagates substantially in a single plane between the first and the second mirror. Also an optical detection system includes the multipass cell; an optical source configured to direct a beam into the cavity; and a detector element configured to receive the beam exiting the cavity or configured to receive the acoustic signal generated by light absorption in the cavity.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: July 2, 2019
    Assignee: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
    Inventors: Teemu Kääriäinen, Albert Manninen
  • Wide-band acoustically coupled thin-film BAW filter
    Patent number: 10320361
    Abstract: In a bulk acoustic wave (BAW) filter based on laterally acoustically coupled resonators on piezoelectric thin films, one can utilize two distinct acoustic plate wave modes of different nature, for example the thickness extensional (longitudinal) TE1 and the second harmonic thickness shear (TS2) mode to form a bandpass response. The invention is based on the excitation of at least two lateral standing wave resonances belonging to different plate wave modes that facilitate the transmission of signal. The passband is designed by tailoring the wave propagation characteristics in the device such that the resonances are excited at suitable frequencies to form a passband of a desired shape. The bandwidth of the filter described herein may therefore be more than twice that of the existing state-of-the-art microacoustic filters. Consequently, it has significant commercial and technological value.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: June 11, 2019
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Johanna Meltaus, Tuomas Pensala