Patents Assigned to VTT
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Publication number: 20120020828Abstract: The invention relates to a method for preventing the oxidation of metals in thermal spraying by coating the metallic powders to be used with nanocarbides, to a coating achieved using the method as well as to a method for treating the metal powder with nanocarbides. The methods according to the invention are suitable for all metal powders used in thermal spraying and, as the invention enables the use of cheaper materials, they are economically extremely advantageous.Type: ApplicationFiled: March 3, 2010Publication date: January 26, 2012Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTTInventors: Tomi Suhonen, Tommi Varis, Erja Turunen, Tapio Ritvonen
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Patent number: 8100995Abstract: The invention relates to a method of reforming a gas containing tarry impurities, such as the gasification gas obtained by gasifying a fuel. In the method, oxygen or an oxygenous gas (10) is added to a gas flow (8), after which the gas is brought into contact with a solid catalyst (11, 12) at a high temperature. According to the invention, the reformation takes place in stages so that, in the first pre-reforming stage, the gas is brought into contact with a zirconium-based catalyst (11), such as zirconium oxide, for example, and, in the next stage, with a metal catalyst (12), such as metallic nickel. The two-stage reformation is used for preventing the deactivation of the metal catalyst and the formation of carbon deposits in the reforming reactor. The invention also includes the use of the zirconium compound in pre-reforming the tar-bearing gas to achieve the said goals.Type: GrantFiled: April 10, 2007Date of Patent: January 24, 2012Assignee: Teknologian Tutkimuskeskus VTTInventors: Pekka Simell, Esa Kurkela
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Publication number: 20120005788Abstract: Provided is a method for producing xylonic acid from xylose with a recombinant fungal strain that is genetically modified to express a xylose dehydrogenase gene, which is able to convert xylose to xylonolactone, which is spontaneously or enzymatically hydrolysed to xylonic acid. The xylonic acid is excreted outside the host cell. Xylonate production may be coupled with xylitol production. Alternatively, if xylitol production is not desired, its production is reduced by removing the aldose reductase (or specific xylose reductase) enzyme, which converts xylose to xylitol. Expression of a heterologous lactonase encoding gene may result in higher acid concentrations. The method is suitable for producing xylonic acid from a hemicellulose hydrolysate such as hydrolysed lignocellulosic plant biomass.Type: ApplicationFiled: March 17, 2010Publication date: January 5, 2012Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTTInventors: Peter Richard, Marilyn Wiebe, Mervi Toivari, Dominik Mojzita, Laura Ruohonen, Merja Penttilä
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Publication number: 20120003477Abstract: Particles of a polysaccharide derivative, having at least one substituent with conjugated unsaturated bonds and exhibiting an index of refraction in excess of 1.50 and a method for the production thereof. In the method, the raw-material is suspended in an organic solvent to form a suspension, which is contacted with an organic reactant comprising a residue with conjugated unsaturated bonds; the raw-material and the organic reactant are reacted to form a derivative exhibiting ester or ether bond between the raw-material and the residue with conjugated unsaturated bonds; the polysaccharide derivative is dissolved in a solvent to form a solution; and the solution is contacted with a non-solvent to precipitate particles of the polysaccharide derivative invention provides lightweight, optically improved organic pigments and fillers based on renewable resources and which are recyclable by combustion or composting.Type: ApplicationFiled: December 30, 2009Publication date: January 5, 2012Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTTInventors: Hannu Mikkonen, Kaisa Putkisto, Soili Peltonen, Sari Hyvärinen, Kimmo Koivunen
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Publication number: 20110315777Abstract: The invention concerns a transponder (10), kit and method for marking wood material, such as logs. The transponder comprises a rigid casing adapted to be inserted into the wood material by means of impact, the casing comprising a wedge-shaped first edge (12) adapted to penetrate into the wood material due to said impact, and a second edge (16) opposite to the first edge, the first and second edges (12, 16) defining an insertion direction of the transponder, and radio-frequency trans-ponding means (20) covered by the casing. According to the invention, the casing is elongated in a direction perpendicular to the insertion direction. The transponder is easily applicable into a log and stays well within the log.Type: ApplicationFiled: December 17, 2009Publication date: December 29, 2011Applicants: SP TECHNICAL RESEARCH INSTITUTE OF SWEDEN, TEKNOLOGIAN TUTKIMUSKESKUS VTTInventors: Janne Häkli, Kaarle Jaakkola, Kaj Nummila, Juha-Matti Saari, Bo Axelsson, Kari Kolppo
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Publication number: 20110304513Abstract: The invention relates to a transponder for marking wood material and a method of manufacturing thereof. The method comprises embedding an RFID microchip and antenna into a casing essentially consisting of one or more biodegradable materials. According to the invention the embedding step comprises forming the antenna by layering conductive material directly on biodegradable material, and covering the antenna by biodegradable material. By means of the invention, environmentally friendly and pulping-compatible transponders can be manufactured, for example, for aiding the logistics of forest industry.Type: ApplicationFiled: December 17, 2009Publication date: December 15, 2011Applicants: TAMPERE UNIVERSITY OF TECHNOLOGY, TEKNOLOGIAN TUTKIMUSKESKUS VTTInventors: Janne HäKli, Kaarle Jaakkola, Kaj Nummila, Juha-Matti Saari, Kari Kolppo
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Publication number: 20110279824Abstract: Electrically tunable Fabry-Perot interferometers which are produced with micromechanical (MEMS) technology. Producing interferometers with prior art processes includes costly and complicated production phases. Therefore, it has not been possible to apply interferometers in consumer mass products. According to the present solution, the Fabry-Perot cavity is made by removing a sacrificial layer (112) which has been polymer material. A mirror layer (113, 117-120) which is produced above the sacrificial layer can be made with atomic layer deposition technology, for example. According to a preferable embodiment, electrodes (106b, 115b) of the mirror structures are formed by using sputtering or evaporation. With the present solution it is possible to avoid the above mentioned problems related with prior art.Type: ApplicationFiled: January 27, 2010Publication date: November 17, 2011Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTTInventors: Martti Blomberg, Hannu Kattelus, Riikka Puurunen
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Publication number: 20110256362Abstract: The present invention relates to a modified fibrous product and a method of producing the same. According to the method, transparent areas are generated in the fibrous product, such as in a paper or a cardboard sheet or in a paper or a cardboard web. According to the present invention, a carbohydrate derivative that includes a plasticizer is incorporated into the fibrous product, and the carbohydrate derivative, which is plasticized with the plasticizer, is brought, in a liquid state and under pressure, to migrate in between the fibres of the product in such a way that at least part of the plasticizer penetrates into the lumens of the fibres, in which case the fibrous product becomes transparent in the treated area. By using the solution, it is possible to simplify the method of further processing paper or cardboard for consumer packages. The present invention can be applied to, among other products, envelopes having a window through which the address is visible.Type: ApplicationFiled: October 20, 2009Publication date: October 20, 2011Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTTInventors: Hannu Mikkonen, Tero Malm, Vesa Kunnari, Elias Retulainen
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Publication number: 20110249272Abstract: The present invention is related with the optical instrument such as interferometer for testing the optical systems and samples whereas the optical instrument comprises the laser (1) for generating the laser beam which passes the beam expander (2), beam-splitter (23) dividing the laser beam to a working light beam and reference light beam, focusing objectives (3, 7), flat glass plate (4) with one side coated by thin metal highly reflecting coating with the pattern including a pinhole, computer (12), CCD camera (13), tested part or optical system (6). In addition the optical instrument comprises at least two flat mirrors (24, 25), observation objective and at least one stop (20) placed between the beam-splitter (23), flat mirrors (24, 25) and/or focusing objective (7).Type: ApplicationFiled: November 30, 2009Publication date: October 13, 2011Applicant: VTT-NTM OUInventors: Maria Voznesenskaya, Aleksei Kuznetsov, Jung Mee Suk, Heorhi Tsikhanchuk
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Publication number: 20110214600Abstract: The invention relates to an indicator comprising a substrate and an optical grating structure fabricated on the substrate, the grating structure being formed from an indicator material comprising a binder and deliquescent salt and varying in volume by the effect of moisture. Further, the invention relates to a method for fabricating an indicator wherein a substrate is coated by an indicator material forming an optical grating structure, and the optical grating structure is fabricated onto the substrate, and use of an indicator for detecting quality and/or authenticity. Furthermore, the invention relates to a package and a method for detecting a change induced by moisture without breaking the package.Type: ApplicationFiled: June 17, 2009Publication date: September 8, 2011Applicant: Teknologian tutkimuskeskus VTTInventors: Eero Hurme, Then Sipiläinen-Malm
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Publication number: 20110199340Abstract: Arrangement for use with a touchscreen, includes a substrate, such as an optically substantially transparent film or a film defining a through hole, the substrate including support electronics, such as printed electronics including a number of printed conductors, for providing power, control and/or communications connection to further electronic components, a number of emitters and detectors arranged on the substrate into contact with the support electronics, for emitting and detecting light, respectively, and a lightguide arranged onto the substrate such that the emitters and detectors, and optionally at least part of the support electronics, are substantially immersed in the lightguide material, the properties of the lightguide including the refractive index of the lightguide material being selected and the emitters and detectors being configured so as to enable, when in use, total internal reflection (TIR)-type propagation of light within the lightguide between the emitters and detectors and recognition ofType: ApplicationFiled: October 23, 2009Publication date: August 18, 2011Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTTInventors: Janne Aikio, Antti Keranen
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Publication number: 20110136238Abstract: The invention relates to a dye composition comprising a dye, dye converter, binder, reducing agent, solvent and optionally basic agent. Further, the invention relates to a method for fabricating an oxygen indicator wherein a dye composition is applied over a substrate and reduced by heating, to an oxygen indicator fabricated by the method and to a package for detecting a leakage and/or variation in the oxygen content.Type: ApplicationFiled: June 17, 2009Publication date: June 9, 2011Applicant: Teknologian tutkimuskeskus VTTInventors: Eero Hurme, Thea Sipiläinen-Malm
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Publication number: 20110104190Abstract: The present invention is related to field of allergic (hypersensitivity) diseases and provides a method for producing modified allergenic polypeptides for use in immunotherapies. In the method of the invention, said allergenic polypeptides are modified so that they are not capable to form transient dimers. The invention also provides modified ?-lactoglobulins for use in immunotherapy of milk allergy.Type: ApplicationFiled: June 18, 2009Publication date: May 5, 2011Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTTInventors: Juha Rouvinen, Kristiina Takkinen, Merja Niemi, Sirpa Jylhä, Hans Söderlund, Marja-Leena Laukkanen
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Publication number: 20110086364Abstract: A binding partner, especially an antibody fragment that specifically recognizes an antigen-antibody immune complex between anti-THC and THC (tetrahydrocannabinol), is disclosed. The binding partner facilitates a non-competitive homogenous immunoassay for detection of cannabis use. A test kit comprising the binding partner is also described. Preferably the immunoassay is applied for roadside testing of saliva from suspected drivers.Type: ApplicationFiled: June 5, 2009Publication date: April 14, 2011Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTTInventors: Kristiina Takkinen, Hans Söderlund, Timo Pulli
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Patent number: 7622634Abstract: The invention relates to the field of secondary metabolite production in plants and plant cell cultures. More specifically, the invention relates to the use of transporters and more particularly ABC-transporters to enhance the production and/or secretion of secondary metabolites in plants and plant cell cultures.Type: GrantFiled: September 18, 2003Date of Patent: November 24, 2009Assignee: VTT BiotechnologyInventors: Alain Goossens, Dirk Gustaaf Inze, Kirsi-Marja Oksman-Caldentey, Into J. Laakso
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Publication number: 20090221039Abstract: The invention relates to fusion proteins including at least a swollenin and at least a plant cell-wall degrading enzyme, the swollenin, and plant cell-wall degrading enzyme, being recombinant proteins corresponding to native proteins in fungi, or mutated forms thereof. The invention also relates to the use of fusion proteins as defined above, for carrying out processes of plant cell-wall degradation in the frame of the preparation, from plants or vegetal by-products, of compounds of interest located in plant cell-wall, or in the frame of the bleaching of pulp and paper, or for biofuel production, or food industries.Type: ApplicationFiled: April 2, 2007Publication date: September 3, 2009Applicants: Institut Francias Du Petrole, VTT Technical Research Centre of Finland, Institute National De La Recherche Agronomique, Universite De ProvenceInventors: Eric Record, Anthony Levasseur, Markku Soloheimo, David Navarro, Martina Andgerg-Blomster, Frederic Monot, Tiina Nakari-Setala, Marcel Asther
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Patent number: 6847722Abstract: The invention relates to a method and an equipment for attenuating sound in a duct. Sound propagating in a duct is detected by means of a detector (2) and attenuated by using two successive monopole elements (3, 4) in such a way that both elements function as a dipole approximation and the elements are also used to approximatively produce the monopole radiation needed. A dipole control signal is fed to both elements (3, 4) at a phase shift which is 180° between the two elements. In addition, a monopole control signal is fed to the same elements (3, 4), only this time cophasally. Total volume velocities produced by the two elements (3, 4) are combinations of the portions obtained from the monopole and dipole sources.Type: GrantFiled: September 9, 1998Date of Patent: January 25, 2005Assignee: VTTInventors: Seppo Uosukainen, Vesa Välimäki, Kari Kirjavainen, Jukka Lekkala, Hannu Nykänen
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Patent number: 6178820Abstract: The invention relates to a sensor for measuring acceleration and sound pressure, the sensor comprising a first pressure sensitive film (2) for measuring pressure (P) and second pressure sensitive film (5) having a mass (6) disposed thereon for measuring acceleration (A). The films are arranged concentrically in the same plane, so that pressure and acceleration are measured at the same point, thereby avoiding a phase difference between the two measurements.Type: GrantFiled: June 8, 1999Date of Patent: January 30, 2001Assignee: VTTInventors: Kari Kirjavainen, Jukka Lekkala, Hannu Nyk{umlaut over (a)}nen, Seppo Uosukainen
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Patent number: 5955014Abstract: A process for fabricating a foamed plastic product. The process includes a plastic film that is prefoamed in order to introduce lamellar discontinuities such as prefoamed bubbles. The film is pressurized by a gas under a positive pressure causing the gas to diffuse into the film, forming a second film. Further, the second film is inflated in order to form the foamed plastic product. The second film is inflated by heating the second film at a temperature below the melting point of the second film and under a reduced pressure.Type: GrantFiled: April 21, 1997Date of Patent: September 21, 1999Assignee: VTT Technology OYInventors: Jaako Raukola, Kari Kirjavainen, Hannu Minkkinen