Abstract: The present invention concerns a method of preparing a film of nanofibrillated cellulose (NFC) on at least one surface of a support material, wherein the film is applied and spread directly onto a surface of the plastic support material in the form of a suspension of nanofibrillated cellulose, whereby the nanofibrillated cellulose forms a film. Further, the invention concerns a structure containing or consisting of a film of nanofibrillated cellulose prepared using said method.
Type:
Grant
Filed:
October 23, 2012
Date of Patent:
June 19, 2018
Assignees:
Teknologian tutkimuskeskus VTT Oy, Aalto University Foundation sr
Inventors:
Tekla Tammelin, Ulla Hippi, Arto Salminen
Abstract: A layered infrared emitter structure includes only semi-transparent metal layers, preferably one semi-transparent metal layer, and one or more dielectric layers on both sides of the semi-transparent metal layer. Further, an electric heating wiring is arranged in or between any of the dielectric layers to heat the semi-transparent metal layer up to a required infrared emission temperature, preferably to a temperature within a range from 400° C. to 1000° C.
Abstract: The invention concerns microelectromechanical resonators. In particular, the invention provides a resonator comprising a support structure, a doped semiconductor resonator suspended to the support structure by at least one anchor, and actuator for exciting resonance into the resonator. According to the invention, the resonator comprises a base portion and at least one protrusion extending outward from the base portion and is excitable by said actuator into a compound resonance mode having temperature coefficient of frequency (TCF) characteristics, which are contributed by both the base portion and the at least one protrusion. The invention enables simple resonators, which are very well temperature compensated over a wide temperature range.
Type:
Grant
Filed:
October 5, 2015
Date of Patent:
June 5, 2018
Assignee:
Teknologian tutkimuskeskus VTT Oy
Inventors:
Antti Jaakkola, Panu Pekko, Mika Prunnila, Tuomas Pensala
Abstract: The present invention relates to selective catalytic dehydroxylation method of aldaric acids for producing muconic acid and furan chemicals, which can be used directly in fine chemical and polymer applications (FCA/FDCA) and as intermediates in the preparation of industrially significant chemicals, such as terephthalic acid, adipic acid, caprolactone, caprolactam, nylon 6.6, 1,6-hexanediol and multiple pharmaceutical building blocks (MA/MAME).
Type:
Grant
Filed:
June 15, 2015
Date of Patent:
May 15, 2018
Assignee:
Teknologian tutkimuskeskus VTT Oy
Inventors:
Martta Asikainen, David Thomas, Ali Harlin
Abstract: Provided is a method and apparatus for producing a hydrocarbon fraction. The hydrocarbon fraction is formed from biomass based synthesis gas, the synthesis gas is fed through at least two catalyst layer, the first catalyst layer includes Fe-based catalyst, the second catalyst layer includes Co-based catalyst, and the synthesis gas is treated by supplying the synthesis gas through the first and second catalyst layers in order to form a hydrocarbon composition including the hydrocarbon fraction. Further, provided is a hydrocarbon fraction and its use.
Abstract: A layered infrared emitter structure includes only semi-transparent metal layers, preferably one semi-transparent metal layer, and one or more dielectric layers on both sides of the semi-transparent metal layer. Further, an electric heating wiring is arranged in or between any of the dielectric layers to heat the semi-transparent metal layer up to a required infrared emission temperature, preferably to a temperature within a range from 400° C. to 1000° C.
Abstract: In this study, commercially available softwood lignin was esterified with tall oil fatty acid (TOFA) and tested as barrier material in fiber-based packaging material. The modified lignin samples were applied with a bar coater forming an even coating on the paperboard substrate. A significant decrease in WVTR and OTR value was observed for paperboard coated with the modified lignin as well as pure TOFA used as a reference. In contrast to the TOFA coating, the modified lignin coatings exhibited a high and stable contact angle. The coating material did not affect the tensile strength of the paperboard. According to the results, the demonstration of the conversion of lignin into a value added product has been shown. Furthermore, the novel coating material shows promising properties for the development as sustainable barrier material in fiber-based packaging material to replace oil-placed barriers.
Type:
Grant
Filed:
October 8, 2012
Date of Patent:
February 27, 2018
Assignee:
Teknologian tutkimuskeskus VTT Oy
Inventors:
Tarja Tamminen, Jarmo Ropponen, Eva-Lena Hult, Kristiina Poppius-Levlin
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:
Application
Filed:
March 8, 2016
Publication date:
February 22, 2018
Applicant:
Teknologian tutkimuskeskus VTT Oy
Inventors:
Aapo Varpula, Mika Prunnila, Kestutis Grigoras
Abstract: A near-field identification system having an object that is or contains electrically conductive material and an ultra-high radio-frequency microstrip transponder. The microstrip transponder having a microstrip line and an identification microchip connected to the microstrip line. The microstrip transponder being on the object at a location where the object has an electrically conductive region, the line following at least one edge of the object. When the identification system is being interrogated by an interrogator from below the system an identification signal from the identification microchip is transmittable from the microstrip line via magnetic near field induced by electric current on the edge of the object to below the object. Also discussed is a method for identifying an object or the kind of an object that is or contains electrically conductive material using near-field identification.
Type:
Grant
Filed:
June 20, 2013
Date of Patent:
February 20, 2018
Assignee:
Teknologian tutkimuskeskus VTT Oy
Inventors:
Kaarle Jaakkola, Petteri Koivu, Kaj Nummila
Abstract: The invention relates to an acoustically coupled thin-film BAW filter, comprising a piezoelectric layer, an input-port on the piezoelectric layer changing electrical signal into an acoustic wave (SAW, BAW), and an output-port on the piezoelectric layer changing acoustic signal into electrical signal. In accordance with the invention the ports include electrodes positioned close to each other, and the filter is designed to operate in first order thickness-extensional TE1 mode.
Abstract: Recommendation system based on the actions of a group of users, and not requiring prior metadata, is provided. The recommendation is not limited to from user-to-item (e.g. media recommendation) type; e.g. from user-to-user (e.g. social networking), from item-to-item (e.g. “see also” in internet shopping) and item-to-user (e.g. advertizing) recommendations are supported. The solution utilizes a set of identifiable tokens, associated with each entity, an entity being either a user or an item. Whenever there is an interaction between entities, either existing token sets are updated or new token sets are created such that after an interaction each interacting entity is associated with a token set which resembles more than before the token set(s) associated with the other interacting entity. Recommendation can be produced by searching best matching token sets on the user-to-item, user-to-user, from item-to-item or item-to-user basis.
Type:
Grant
Filed:
November 28, 2012
Date of Patent:
January 30, 2018
Assignee:
TEKNOLOGIAN TUTKIMUSKESKUS VTT
Inventors:
Ville Ollikainen, Raimo Launonen, Atte Kortekangas
Abstract: The present invention concerns a method for manufacturing patterned porous substrates with hidden color patterns by forming hydrophobic patterns on a hydrophilic surface, wherein structural channels are formed as a pattern in a porous substrate using a hydrophobic printing solution lacking colorant, and wherein a colored area is applied on the rear surface of the porous substrate. Further, the present invention concerns said patterned porous substrate and a method for bringing said pattern into a visible state.
Abstract: The invention relates to a method for the manufacture of thermoplastic fibrous materials comprising forming at least one foamed liquid comprising water and at least one foaming agent, forming a dispersion by dispersing fibers including long fibers in said at least one foamed liquid comprising water and at least one foaming agent, mixing the dispersion with a foamable liquid or dispersion comprising at least one thermoplastic polymer, forming at least one foamed dispersion, and conveying the foamed dispersion or dispersions to a foraminous support and draining liquid trough the foraminous support to form a web or a sheet, to obtain the thermoplastic fibrous material. The invention also relates to materials and products obtainable by the method, and uses related thereto.
Type:
Application
Filed:
January 28, 2016
Publication date:
December 21, 2017
Applicant:
TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
Inventors:
Marja JUVONEN, Tuomo HJELT, Jukka KETOJA, Ali HARLIN
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:
Application
Filed:
December 8, 2015
Publication date:
December 21, 2017
Applicant:
TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
Inventors:
Pekka SIMELL, Matti REINIKAINEN, Matti PUTKONEN, Johanna KIHLMAN
Abstract: Provided is a method for forming catalytic nanocoating on a metal surface. The method comprises pretreating the metal surface by means of heat treatment at 500-800° C., forming a metaloxide support, and depositing catalytic nanosized metal and/or metaloxide particles on the metaloxide support and coating the metal surface with catalytic nanosized metal and/or metaloxide particles. Further, the invention relates to a catalyst and a use.
Type:
Application
Filed:
December 8, 2015
Publication date:
December 7, 2017
Applicant:
TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
Inventors:
Pekka SIMELL, Johanna KIHLMAN, Matti REINIKAINEN, Jorma JOKINIEMI, Anna LÄHDE
Abstract: An arrangement for hyperspectral imaging, comprising an imaging sensor (170,270); a band-pass filter element (130,230): at least one imaging optics element (120,160,220,260) configured to form an image on the imaging sensor (170,270); and a first adjustable multi passband filter (150a,255); wherein the first (150a,255) adjustable multi passband filter is configured to be adjusted by tilting.
Abstract: The invention relates to a microelectromechanical resonator device comprising a support structure and a semiconductor resonator plate doped to a doping concentration with an n-type doping agent and being capable of resonating in a width-extensional resonance mode. In addition, there is at least one anchor suspending the resonator plate to the support structure and an actuator for exciting the width-extensional resonance mode into the resonator plate. According to the invention, the resonator plate is doped to a doping concentration of 1.2*1020 cm?3 or more and has a shape which, in combination with said doping concentration and in said width-extensional resonance mode, provides the second order temperature coefficient of frequency (TCF2) to be 12 ppb/C2 or less at least at one temperature. Several practical implementations are presented.
Type:
Grant
Filed:
October 5, 2015
Date of Patent:
December 5, 2017
Assignee:
Teknologian tutkimuskeskus VTT Oy
Inventors:
Antti Jaakkola, Panu Pekko, Mika Prunnila, Tuomas Pensala
Abstract: Document discloses new technologies for utilizing cellulose based materials in composites and electrically functionalised 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.
Abstract: The invention relates to a cognitive wireless communication system where a wireless terminal is allowed to utilize in channel selection process both licenced bands and unlicensed bands that are available. The invention relates also to a method and computer program for allocating a transmission channel for a wireless terminal either from licenced or unlicensed bands in a cognitive radio system by a resource management server. The utilized spectrum data is gathered by spectrum sensing from databases and control channels and it is saved in a database. A transmission channel to a wireless terminal is allocated by the resource management server by utilizing gathered short term and long term spectrum data.
Type:
Grant
Filed:
May 16, 2014
Date of Patent:
November 14, 2017
Assignee:
Teknologian Tutkimuskeskus VTT OY
Inventors:
Marko Höyhtyä, Janne Kuismin, Heli Vuojala
Abstract: The present invention concerns a process for manufacturing a thermoformable plasticized composite containing cellulose fiber and polylactide by blending the dry cellulose fiber and a compatibilizer in a compactor into pellets, and subsequently reacting the reactive compatibilizer and the mixture of cellulose fiber and polylactide by compounding. The invention also concerns a composite manufactured using said process, as well as further processed products.
Type:
Grant
Filed:
March 5, 2012
Date of Patent:
November 7, 2017
Assignee:
TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
Inventors:
Kirsi Immonen, Eino Sivonen, Kyosti Valta, Janne Hulkko, Samu Aalto, Pauliina Pitkanen, Kirsi Salorinne