Patents Assigned to Eidgenossische Materialprufungs-und Forschungsanstalt
  • Publication number: 20200208346
    Abstract: The present invention provides a method for obtaining densified material comprising the steps of a. providing lignocellulosic material, b. delignification of the lignocellulosic material providing a delignified material, wherein the delignification step is performed in such a way that the lignin of the lignocellulosic material is almost completely removed and wherein the structural integrity of the lignocellulosic material is maintained in the delignified material, c. densification of the delignified material providing a densified material. Furthermore, a densified material is provided. The fibers and fibrils are maintained in the structural directionality of the raw material and that the cellulosic material is whitish.
    Type: Application
    Filed: April 12, 2018
    Publication date: July 2, 2020
    Applicants: ETH ZURICH, EMPA, EIDGENÖSSISCHE MATERIALPRÜFUNGS- UND FORSCHUNGSANSTALT
    Inventors: Thomas SCHNIDER, Ingo BURGERT, Jana SEGMEHL, Tobias KEPLINGER
  • Patent number: 10604449
    Abstract: The present invention relates to improved concrete elements, particularly to self-prestressed, high-performance concrete elements (SP-HPC elements); to cementitious compositions suitable, for producing such concrete elements; to methods of manufacturing such concrete elements and such cementitious compositions; to the use of specific components in concrete elements and cementitious mixtures. The compositions and elements described herein comprise an effective amount of expansive agents in combination with superabsorbent polymers (SAP) and shrinkage reducing admixtures (SRA), and optional further components as defined in the claims. The present invention further provides for improved tendons, suitable for SP-HPC elements.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: March 31, 2020
    Assignee: EMPA EIDGENÖSSISCHE MATERIALPRÜFUNGS- UND FORSCHUNGSANSTALT
    Inventors: Giovanni Pietro Terrasi, Mateusz Ryszard Wyrzykowski, Pietro Lura
  • Publication number: 20190329498
    Abstract: Use of a sensor read out system with at least one fiber optical sensor, which is connected via at least one signal line to a processing unit as part of an additive manufacturing setup, for in situ and real time quality control of a running additive manufacturing process.
    Type: Application
    Filed: June 9, 2017
    Publication date: October 31, 2019
    Applicant: EMPA EIDGENÖSSISCHE MATERIALPRÜFUNGS- UND FORSCHUNGSANSTALT
    Inventors: Kilian WASMER, Sergey SHEVCHIK, Farzad VAKILI FARAHANI, Georgios VIOLAKIS, Sébastien VAUCHER
  • Patent number: 10366863
    Abstract: A detector supplement device for integration in a spectroscopy setup with the spectroscopy setup including a vacuum chamber, a light source, a sample irradiating a reflected photon beam and a charged particle beam in the same direction of propagation into a radiation detector which is able to detect ultrafast electric currents originating from charged particles. The detector supplement device includes a Rogowski coil placeable inside the vacuum chamber between the sample and radiation detector. The charged particle beam is guided through the hollow core of the Rogowski coil allowing synchronized measurements of electrical currents due to the charged particle beam correlated to the reflected photon beam, while irradiation of the reflected photon beam and the charged particle beam takes place in the same direction of propagation.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: July 30, 2019
    Assignee: EMPA EIDGENÖSSISCHE MATERIALPRÜFUNGS-UND FORSCHUNGSANSTALT
    Inventors: Davide Bleiner, Yunieski Arbelo-Pena
  • Publication number: 20190219445
    Abstract: A waveguide spectrometer includes at least one substrate layer with at least one waveguide. Each waveguide extends from an inlet face proceeding partly through the substrate layer to a reflecting element. A multiplicity of photo detectors is arranged on a front side of the substrate layer, while the photo detectors are electrically connected to an electronic read out system. The spectrometer can be made lightweight and easier to produce by forming the waveguides as surface waveguides, each showing a longitudinal opening with a width to the front side of the substrate layer between the inlet face and the reflecting element. The photo detectors are in print distributed at the front side on top of the substrate layer at least partly overlapping the longitudinal opening along an overall length of sampled region and the electrical connection of the photo detectors with the electronic read out system is achieved by a multiplicity of printed electrical conductors.
    Type: Application
    Filed: July 5, 2017
    Publication date: July 18, 2019
    Applicants: MICOS ENGINEERING GMBH, EMPA EIDGENÖSSISCHE MATERIALPRÜFUNGS- UND FORSCHUNGSANSTALT
    Inventors: Mohammadreza MADI, Edoardo ALBERTI, Ivan SHORUBALKO
  • Publication number: 20190130886
    Abstract: A unit cell of an artificial phononic crystal for building of an artificial phononic metamaterial, showing reduced mechanical vibrations in a defined frequency range with at least one band gap in the band structure dispersion relation of the unit cell. The unit cell includes at least one building block and at least one mechanical connection connected to the building block, showing reduced mechanical vibrations in a defined frequency range with tailored dispersion properties with at least one band gap is sought. This is accomplished by forming the building block as a toroid, with a central opening and a front surface from which a first multiplicity of struts, which are tiltable relatively to the principal direction, is extending from the front surface. More than one strut is inclined with respect to the principal direction so that a rotation of the toroid around the principal direction is possible.
    Type: Application
    Filed: April 26, 2017
    Publication date: May 2, 2019
    Applicant: EMPA Eidgenössische Materialprüfungs- und Forschungsanstalt
    Inventors: Tommaso DELPERO, ANDREA BERGAMINI
  • Publication number: 20180258232
    Abstract: The present invention relates to a method for manufacturing hydrophilic biopolymers, particularly hydrophilic cellulosic material, particularly cellulose nanofibers like micro- or nanofibrillated cellulose, as described in claim 1; to novel materials comprising hydrophilic biopolymers and to the use of such hydrophilic biopolymers.
    Type: Application
    Filed: December 5, 2014
    Publication date: September 13, 2018
    Applicant: EMPA Eidgenossische Materialprufungs- und Forschungsanstalt
    Inventors: Sébastien JOSSET, Philippe TINGAUT, Tanja ZIMMERMANN
  • Publication number: 20180257256
    Abstract: The invention relates to a method for treatment of wood material. In a first treatment step comprises the provision of a solution comprising zinc oxide or titanium(IV) isopropoxide and immersion of the wood material into the solution. After drying of the wood material a second treatment step is following in case of the first solution comprising zinc oxide. The second treatment step comprises the provision of a solution comprising a zinc compound and immersion of the wood material from the first treatment step into the solution followed by drying of the wood material. In a second aspect the invention relates to a wood material characterized by the visibility of the natural appearance of the surface and at least one other property relating to UV resistance, weathering resistance, mechanical resistance or hydrophobic properties.
    Type: Application
    Filed: September 5, 2016
    Publication date: September 13, 2018
    Applicants: ETH Zurich, EMPA EIDGENOSSISCHE MATERIALPRUFUNGS- UND FORSCHUNGSANSTALT
    Inventors: Ingo BURGERT, Etienne CABANE, Huizhang GUO
  • Patent number: 10072212
    Abstract: The invention relates to novel and improved halogen-free flame retardant compounds having the structure of Formula (I): wherein: R1 and R2 are independently hydrogen, C1-C6 alkyl, —P(O)(OR3)2, —P(O)OR3R4, or —P(O)R32, wherein R3 and R4 are independently C1-C4 alkyl, C6-C12 aryl, C7-C15 aralkyl or C7-C15 alkaryl; or R1 and R2 taken together form an unsaturated cyclic ring, which is optionally substituted by an alkyl group; each k is independently an integer from 1 to 2; each X is independently oxygen (O) or sulphur (S); v is 0 or 1; each Y is independently C1-C4 alkylene, C6 arylene, C7-C15 aralkylene, C7-C15 alkarylene, oxygen (O), nitrogen (NR), wherein R is H or C1-C4 alkyl; n is 0, 1 or 2 with the proviso that n is 1 when Y is oxygen (O) or nitrogen (NR); each Z is independently C1-C4 alkylene, C6 arylene, C7-C15 aralkylene or C7-C15 is alkarylene; m is independently 0, 1 or 2; with the proviso that when Y is oxygen (O) or nitrogen (N), m cannot be 0; each Q is independently C1-C4 alkylene; t is an integer
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: September 11, 2018
    Assignee: EMPA Eidgenossische Materialprufungs-Und Forschungsanstalt
    Inventors: Timea Stelzig, Lea Bommer, Sabyasachi Gaan, Aleksandra Buczko, Rudolf Hufenus, Giuseppino Fortunato, Benno Wüst, Pierluigi Barbadoro
  • Patent number: 10040720
    Abstract: In order to produce a high performance thermally insulating rendering, a dry blend is provided that consists essentially of: —60 to 90 Vol.-% of a hydrophobized granular silica aerogel; —0.5 to 30 Vol.-% of a purely mineral binder; —0.2 to 20 Vol.-% of an open-porous water-insoluble or slowly water soluble additive having an accessible pore volume from 10 to 90 Vol.-%; —up to 5 Vol.-% reinforcing fibers; and—up to 5 Vol.-% of processing additives. After mixing the dry blend with water, the slurry thus formed can be applied to a surface or shaped to a self-supporting body using an overpressure without adversely affecting the thermal insulation properties.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: August 7, 2018
    Assignees: EMPA Eidgenössische Materialprüfungs-Und Forschungsanstalt, FixIt AG
    Inventors: Thomas Stahl, Samuel Brunner, Mark Zimmermann, Matthias Koebel
  • Publication number: 20180087224
    Abstract: An additive for a bituminous binder respectively a bituminous composite material, able to reduce bituminous binder respectively bituminous composite material viscosity when an alternating magnetic field is applied, in particular for healing pavement cracks and in-depth micro-cracks in asphalt, wherein the additive comprises an amount of magnetic iron oxide particles should be improved, in order to reach bituminous composite material respectively a bituminous binder which can be melted in a faster and simplified way, in particular usable for crack healing of asphalt structures on site. This is reached by forming the additive comprising at least a part of magnetic iron oxide nanoparticles with average sizes between 1 nm and 300 nm coated with a fatty acid.
    Type: Application
    Filed: April 18, 2016
    Publication date: March 29, 2018
    Applicants: EMPA - Eidgenössische Materialprüfungs- und Forschungsanstalt, ETH Zürich
    Inventors: Etienne JEOFFROY, Manfred PARTL, André STUDART
  • Publication number: 20180043303
    Abstract: A porous adsorbent structure that is capable of a reversible adsorption and desorption cycle for capturing CO2 from a gas mixture comprises a support matrix formed by a web of surface modified cellulose nanofibers. The support matrix has a porosity of at least 20%. The surface modified cellulose nanofibers consist of cellulose nanofibers having a diameter of about 4 nm to about 1000 nm and a length of 100 nm to 1 mm that are covered with a coupling agent being covalently bound to the surface thereof. The coupling agent comprises at least one monoalkyldialkoxyaminosilane.
    Type: Application
    Filed: October 13, 2017
    Publication date: February 15, 2018
    Applicant: EMPA Eidgenossische Materialprufungs-Und Forschungsanstalt
    Inventors: Christoph Gebald, Tanja Zimmermann, Philippe Tingaut
  • Publication number: 20180001576
    Abstract: The invention relates to a method for producing an aerogel material with a porosity of at least 0.55 and an average pore size of 10 nm to 500 nm, having the following steps: a) preparing and optionally activating a sol; b) filling the sol into a casting mold (10); c) gelling the sol, whereby a gel is produced, and subsequently aging the gel; at least one of the following steps d) and e), d) substituting the pore liquid with a solvent; e) chemically modifying the aged and optionally solvent-substituted gel (6) using a reaction agent; followed by f) drying the gel, whereby the aerogel material is formed. The casting mold used in step b) is provided with a plurality of channel-forming elements (2) which are designed such that the sol filled into the casting mold lies overall at a maximum distance X from a channel-forming element over a specified minimum length L defined in the channel direction of the elements, with the proviso that X<15 mm and L/X>3.
    Type: Application
    Filed: February 4, 2016
    Publication date: January 4, 2018
    Applicant: EMPA EIDGENOSSISCHE MATERIALPRUFUNGS- UND FORSCHUNGSANSTALT
    Inventors: MATTHIAS KOEBEL, LUKAS HUBER
  • Patent number: 9650497
    Abstract: A group of novel compounds containing one or more amino substituted DOPO (9,10-dihydro-9-oxa-phosphaphenthren-10-oxide) moieties. The compounds were found to have good flame retardant properties and also good thermal stability, which makes them particularly suitable as flame retardant additives for various thermoplastic polymers. In particular, they can be incorporated in a polyurethane foam.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: May 16, 2017
    Assignees: EMPA EIDGENOSSISCHE MATERIALPRUFUNGS- UND FORSCHUNGSANSTALT, FRITZ NAUER AG
    Inventors: Sabyasachi Gaan, Matthias Neisius, Primo Mercoli, Shuyu Liang, Henri Mispreuve, Reinold Näscher
  • Patent number: 9638624
    Abstract: A Multi-pass optical cell (1) with an internal space (11) for laser spectroscopy is described, which is able to reduce or eliminate interference fringes appearing by performing laser absorption spectroscopy in the multi-pass optical cells (1) leading to improved absorption spectra. This is achieved by using a multi-pass optical cell (1) comprising an absorption mask (3) which is permanently or removable mountable in the internal space (11) in a rotatably fixed manner, where in a mask wall (30) a plurality of m apertures (300) is formed, in which the position of each aperture (300) is adapted to a predefinable propagation path of a main optical beam and/or the resulting reflection spot pattern (211) defined by the geometry of the multi-pass optical cell (1) and the used angle of incidence of an initial beam (20), so that each aperture (300) is traversable by the main optical beam from a first side (301) to a second side (302).
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: May 2, 2017
    Assignee: EMPA EIDGENÖSSISCHE MATERIALPRÜFUNGS- UND FORSCHUNGSANSTALT
    Inventors: Markus Mangold, Bela Tuzson, Lukas Emmenegger
  • Publication number: 20160258153
    Abstract: A process for the production of an aerogel material comprises the following steps: a) preparation of a silicon oxide sol in an alcoholic solvent mixture; b) triggering of the gelation of the sol by adding base, whereby a gel is formed, and optionally aging of the gel; c) hydrophobicization of the optionally aged gel; d) removal of the solvent mixture by subcritical drying, whereby the aerogel material is formed. The silicon oxide sol formed in step a) comprises at least one acid-catalytically activatable hydrophobicization agent, wherein the volume fraction of the hydrophobicization agent in the sol is 5 to 60%. The hydrophobicization in step c) is induced as a result of release or addition of at least one hydrophobicization catalyst acting in combination with the hydrophobicization agent.
    Type: Application
    Filed: July 28, 2014
    Publication date: September 8, 2016
    Applicant: EMPA Eidgenössische Materialprüfungs-Und Forschungsanstalt
    Inventors: Matthias KOEBEL, Shanyu ZHAO, Samuel BRUNNER, Caroline SIMMEN
  • Publication number: 20160243636
    Abstract: The present application describes a joining method of a Carbon Nanotube-assembly (1) on a substrate (2), showing a reproducible controlled joining with partly carbidization of the carbon nanotubes. To solve this problem, the Carbon Nanotube-assembly (1) is fixed to the substrate (2) by an active brazing process, with the steps of: melting and subsequent wetting and spreading of an active brazing alloy (3) in form of a at least ternary alloy, comprising an amount of copper and at least one carbide forming element with an amount of at least 1 wt % onto the substrate (2), contacting of the Carbon Nanotube-assembly (1) with the active brazing alloy (3) on the substrate (2), followed by a heating step of the components (1, 2, 3) in vacuum or inert gas atmosphere to temperatures above the solidus temperature of the active brazing alloy (3) and between 800° C. and 900° C. corresponding brazing material and assembly are also claimed.
    Type: Application
    Filed: September 18, 2014
    Publication date: August 25, 2016
    Applicant: EMPA Eidgenossische Materialprufungs- und Forschungsanstalt
    Inventors: Remi Longtin, Hans Rudolf Elsener, Christian Leinenbach, Juan Ramon Sanchez-Valencia
  • Patent number: 9353006
    Abstract: The present invention relates to improved concrete elements, particularly to high-performance self-compacting concrete (HP-SCC); to cementitious compositions suitable for producing such concrete elements; to methods of manufacturing such concrete elements and such cementitious compositions; to the use of specific additives in concrete elements and cementitious mixtures. The inventive compositions comprise an effective amount of polymer fibers and of hydrogels. The inventive concrete elements show improved fire resistance, particularly towards explosive spalling.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: May 31, 2016
    Assignee: EMPA Eidgenossische Materialprufungs- und Forschungsanstalt
    Inventors: Pietro Lura, Giovanni Pietro Terrasi
  • Publication number: 20160083295
    Abstract: In order to produce a high performance thermally insulating rendering, a dry blend is provided that consists essentially of: —60 to 90 Vol.-% of a hydrophobized granular silica aerogel; —0.5 to 30 Vol.-% of a purely mineral binder; —0.2 to 20 Vol.-% of an open-porous water-insoluble or slowly water soluble additive having an accessible pore volume from 10 to 90 Vol.-%—up to 5 Vol.-% reinforcing fibers; and—up to 5 Vol.-% of processing additives. After mixing the dry blend with water, the slurry thus formed can be applied to a surface or shaped to a self-supporting body using an overpressure without adversely affecting the thermal insulation properties.
    Type: Application
    Filed: December 10, 2013
    Publication date: March 24, 2016
    Applicants: Fixit AG, EMPA Eidgenossische Materialprufungs- Und Forschungsanstalt
    Inventors: Thomas Stahl, Samuel Brunner, Mark Zimmermann, Matthias Koebel
  • Publication number: 20150315079
    Abstract: The present invention relates to improved concrete elements, particularly to high-performance self-compacting concrete (HP-SCC); to cementitious compositions suitable for producing such concrete elements; to methods of manufacturing such concrete elements and such cementitious compositions; to the use of specific additives in concrete elements and cementitious mixtures. The inventive compositions comprise an effective amount of polymer fibres and of hydrogels. The inventive concrete elements show improved fire resistance, particularly towards explosive spalling.
    Type: Application
    Filed: December 21, 2012
    Publication date: November 5, 2015
    Applicant: EMPA Eidgenössische Materialprüfungs- und Forschungsanstalt
    Inventors: Pietro LURA, Giovanni Pietro TERRASI