Patents by Inventor Katharina Landfester
Katharina Landfester 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: 11311010Abstract: The present invention provides lignin nanoparticles containing a hydrophobic active agent and a process for the production of the lignin nanoparticles. The process involves the following steps: (i) dissolving modified lignin and a hydrophobic active agent in an organic solvent having low solubility in water; (ii) combining the solution with water and a surfactant to form a pre-emulsion; (iii) forming an emulsion from the pre-emulsion; and (iv) crosslinking the modified lignin to form the lignin nanoparticles, in which the modified lignin is lignin which is chemically modified to contain at least two functional groups suitable for polymerization and/or crosslinking.Type: GrantFiled: April 9, 2020Date of Patent: April 26, 2022Assignees: MAX-PLANCK-GESELLSCHAFT ZUR FÖRDERUNG DER WISSENSCHAFTEN E.V., INSTITUT FÜR BIOTECHNOLOGIE UND WIRKSTOFF-FORSCHUNG GGMBHInventors: Frederik Wurm, Katharina Landfester, Doungporn Yiamsawas, Eckhard Thines, Jochen Fischer
-
Publication number: 20210388260Abstract: The present invention relates to the use of a compound in single-molecule localization microscopy (SMLM), in stimulated emission depletion microscopy (STED), in minimal emission fluxes microscopy (MINFLUX) or in structured illumination and localization microscopy (SIMFLUX), wherein the compound is a substituted or unsubstituted polycyclic aromatic hydrocarbon comprising six or more substituted and/or unsubstituted aromatic hydrocarbon rings, wherein each of at least six of the six or more substituted and/or unsubstituted aromatic hydrocarbon rings is fused with at least another one of the at least six substituted and/or unsubstituted aromatic hydrocarbon rings.Type: ApplicationFiled: September 30, 2019Publication date: December 16, 2021Applicant: Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.VInventors: Xiaomin LIU, Akimitsu NARITA, Sapun PAREKH, Qiang CHEN, Klaus MÜLLEN, Christoph CREMER, Katharina LANDFESTER, Mischa BONN
-
Publication number: 20210382042Abstract: The present invention relates to a test element for the detection of an analyte comprising an enzyme, wherein the enzyme is incorporated in a nanocapsule.Type: ApplicationFiled: August 20, 2021Publication date: December 9, 2021Applicant: Roche Diabetes Care, Inc.Inventors: Grit Baier, Carina Horn, Katharina Landfester, Anna Musyanovych, Umaporn Paiphansiri
-
Publication number: 20210356396Abstract: The present invention refers to Biodegradable, biocompatible, water-suspensable nanoparticle (1), for generating a second- or third-harmonic light signal upon illumination, as well as a method for preparing an aqueous suspension comprising said nanoparticle, a method for second-harmonic generation imaging of the nanoparticle (1) as and a use of the nanoparticle (1) for second-harmonic generation imaging. The nanoparticle (1) according to the invention comprises —a shell layer (2) comprising a biodegradable polymer (3), wherein the shell layer (2) encloses —a plurality (40) of oligopeptides (4), wherein the plurality (40) of oligopeptides (4) is structured such that a second-harmonic light signal is generated upon illumination of the nanoparticle (1) with light.Type: ApplicationFiled: September 28, 2017Publication date: November 18, 2021Applicants: MAX-PLANCK-GESELLSCHAFT ZUR FÖRDERUNG DER WISSENSCHAFTEN E. V., ETH ZÜRICHInventors: Periklis PANTAZIS, Ali Yasin SONAY, Daniel CRESPY, Katharina LANDFESTER
-
Patent number: 11105800Abstract: The present invention relates to a test element for the detection of an analyte comprising an enzyme, wherein the enzyme is incorporated in a nanocapsule.Type: GrantFiled: April 28, 2016Date of Patent: August 31, 2021Assignee: ROCHE DIABETES CARE, INC.Inventors: Grit Baier, Carina Horn, Katharina Landfester, Anna Musyanovych, Umaporn Paiphansiri
-
Publication number: 20210244675Abstract: A modified nanoparticle for use in a therapeutic method, wherein the therapeutic method comprises the administration of the modified nanoparticle to an organism, the targeting of the modified nanoparticles to a specific site in the organism followed by an uptake of the modified nanoparticle into a cell, and wherein the modified nanoparticle is obtainable by a process comprising the steps of i) providing a nanoparticle and ii) contacting the nanoparticle with one or more antibodies as at a pH value of less than 7.0 so as to non-covalently bind the one or more antibodies via its/their Fc region onto the surface of the nanoparticle, wherein the nanoparticle provided in step i) is made of a material having at least one protonable or deprotonable group on the surface thereof and/or the one or more targeting moieties contacted with the nanoparticle in step ii) has at least one protonable or deprotonable group.Type: ApplicationFiled: May 6, 2019Publication date: August 12, 2021Inventors: Katharina Landfester, Volker Mailänder
-
Publication number: 20200390092Abstract: The present invention provides lignin nanoparticles containing a hydrophobic active agent and a process for the production of the lignin nanoparticles. The process involves the following steps: (i) dissolving modified lignin and a hydrophobic active agent in an organic solvent having low solubility in water; (ii) combining the solution with water and a surfactant to form a pre-emulsion; (iii) forming an emulsion from the pre-emulsion; and (iv) crosslinking the modified lignin to form the lignin nanoparticles, in which the modified lignin is lignin which is chemically modified to contain at least two functional groups suitable for polymerization and/or crosslinking.Type: ApplicationFiled: April 9, 2020Publication date: December 17, 2020Inventors: Frederik WURM, Katharina LANDFESTER, Doungporn YIAMSAWAS, Eckhard THINES, Jochen FISCHER
-
Patent number: 10739334Abstract: A capsule suitable for oxygen and temperature sensing contains: i) at least one first sensitizer compound being capable of energy transfer to triplet oxygen, ii) at least one compound being capable of reacting with and inactivating singlet oxygen, iii) at least one second sensitizer compound being capable of absorbing radiation at a second frequency v2 and of emitting light at a fourth frequency v4, iv) at least one emitter compound, wherein the at least one second sensitizer compound is capable of transferring energy to the at least one emitter compound and wherein the at least one emitter compound, after obtaining energy transferred from the at least one second sensitizer compound, is capable of emitting light at a third frequency v3, wherein the following equation is fulfilled: v3>v2, wherein the upper energy limit of the first triplet energy band of the first sensitizer compound is lower than the lower energy limit of the second triplet energy band of the second sensitizer compound and lower than theType: GrantFiled: March 4, 2016Date of Patent: August 11, 2020Assignee: MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN E.V.Inventors: Katharina Landfester, Yury Avlasevich, Dzmitry Busko, Frederik Wurm, Stanislav Balouchev
-
Patent number: 10400164Abstract: A long-term stable photoactive composition, namely a phosphorescent composition or a TTA-photon upconversion composition, contains: a) at least one compound, which has a triplet state capable of energy transfer via an emissive process or a non-emissive process, wherein the at least one compound having a triplet state is i) at least one phosphorescent compound and/or ii) at least one sensitizer compound being capable of absorbing radiation at a first frequency v1 and at least one emissive compound, wherein the at least one sensitizer compound is capable of transferring energy to the at least one emissive compound and wherein the at least one emissive compound, after obtaining energy transferred from the at least one sensitizer compound, is capable of emitting light at a second frequency v2, wherein the following equation is fulfilled: v2>v1, wherein the at least one sensitizer compound is capable of a triplet-triplet energy transfer to the at least one emissive compound and wherein the at least one emissiType: GrantFiled: September 23, 2014Date of Patent: September 3, 2019Assignee: MAX-PLANCK-GESELLSCHAFT ZUR FÖRDERUNG DER WISSENSCHAFTEN E.V.Inventors: Katharina Landfester, Yuri Avlasevich, Andrey Turshatov, Frederik Wurm, Mikhail Filatov, Dzmitry Busko, Stanislav Balouchev, Filippo Marsico
-
Publication number: 20190218335Abstract: The invention relates to a method for producing radiation-curable alkenyl ether polyols, to radiation-curable alkenyl ether polyols produced using the method according to the invention, and to the use thereof for the synthesis of radiation-interlinkable oligomers or polymers by means of polyaddition reactions or polycondensation reactions, in particular for the synthesis of radiation-curable polyesters, polyethers, polyurethanes and polyureas, particularly preferably UV-curable polyurethanes. The invention also relates to radiation-curable polyurethane polymers that are obtained by reacting at least one alkenyl ether polyol according to the invention with a polyisocyanate.Type: ApplicationFiled: March 27, 2019Publication date: July 18, 2019Inventors: Andreas Taden, Katharina Landfester, Stefan Kirschbaum
-
Patent number: 10336855Abstract: The present invention relates to aqueous peptide-functionalized polyurethane dispersions that can be used as adhesives, in particular for metal surfaces, such as steel surfaces. As hybrid materials, they provide for a versatile system that can be finely tuned and combine the advantageous properties of polyurethane and peptide materials. Also encompassed are processes for their production, compositions containing them and their use as coatings and adhesives.Type: GrantFiled: August 25, 2017Date of Patent: July 2, 2019Assignees: Henkel AG & Co. KGaA, Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V.Inventors: Andreas Taden, Katharina Landfester, Roland Breves, Hans G. Börner, Laura Breucker, Christian Kastner, Birgit Veith, Maria Meissler, Hannes Keller
-
Publication number: 20190176121Abstract: The present invention relates to a process for producing nanocapsules employable as thermo latent polymerization catalysts, in particular for the polymerization of polyurethanes, by means of a high shear process, wherein the process comprises: (i) emulsifying a first reaction mixture (a) in a continuous aqueous phase comprising at least one stabilizer; (ii) emulsifying a second reaction mixture (b) in a continuous aqueous phase comprising at least one stabilizer; (iii) combining the first reaction to the nanocapsules produced by means of the described processes, to the use thereof, and to agents which contain these nanocapsules.Type: ApplicationFiled: February 15, 2019Publication date: June 13, 2019Inventors: Andreas Taden, Ann-Christin Bijlard, Anne Hansen, Horst Beck, Katharina Landfester
-
Patent number: 10316134Abstract: The invention relates to a method for producing radiation-curable alkenyl ether polyols, to radiation-curable alkenyl ether polyols produced using the method according to the invention, and to the use thereof for the synthesis of radiation-interlinkable oligomers or polymers by means of polyaddition reactions or polycondensation reactions, in particular for the synthesis of radiation-curable polyesters, polyethers, polyurethanes and polyureas, particularly preferably UV-curable polyurethanes. The invention also relates to radiation-curable polyurethane polymers that are obtained by reacting at least one alkenyl ether polyol according to the invention with a polyisocyanate.Type: GrantFiled: March 7, 2017Date of Patent: June 11, 2019Assignees: Henkel AG & Co. KGaA, Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V.Inventors: Andreas Taden, Katharina Landfester, Stefan Kirschbaum
-
Publication number: 20190037837Abstract: The present invention provides lignin nanoparticles containing a hydrophobic active agent and a process for the production of the lignin nanoparticles. The process involves the following steps: (i) dissolving modified lignin and a hydrophobic active agent in an organic solvent having low solubility in water; (ii) combining the solution with water and a surfactant to form a pre-emulsion; (iii) forming an emulsion from the pre-emulsion; and (iv) crosslinking the modified lignin to form the lignin nanoparticles, in which the modified lignin is lignin which is chemically modified to contain at least two functional groups suitable for polymerization and/or crosslinking.Type: ApplicationFiled: February 6, 2017Publication date: February 7, 2019Inventors: Frederik WURM, Katharina LANDFESTER, Doungporn YIAM-SAWAS, Eckhard THINES, Jochen FISCHER
-
Publication number: 20180371175Abstract: The invention relates to a method for producing acetal-containing polymers, in particular polyurethane or polyester polymers, by reacting polymers comprising side chains of alkenyl ether groups containing monomer units derived from alkenyl ether polyols, with monofunctional or polyfunctional alcohols. The invention further relates to the polymers obtainable by the disclosed method, compositions containing said polymers, and the use thereof.Type: ApplicationFiled: May 23, 2018Publication date: December 27, 2018Inventors: Andreas Taden, Stefan Kirschbaum, Katharina Landfester
-
Publication number: 20180305492Abstract: The invention relates to a method for producing special nanocapsules, which can be used as thermolatent polymerization catalysts, in particular for the polarization of polyurethanes, by means of a high shear process, wherein the method comprises: (i) emulsification of a reaction mixture into a continuous aqueous phase comprising at least one stabilizer, wherein the reaction mixture comprises, based on the total weight of the reaction mixture: (a) 10.0 to 99.0 wt. % of a monomer mixture which comprises, based on the total weight of the monomer mixture: (a1) 2.5 to 19.0 wt. % of at least one simply ethylenically unsaturated C3-5-carboxylic acid monomer; (a2) 76.0 to 97.5 wt. % of at least one simply ethylenically unsaturated C3-5-carboxylic acid-C1-10-alkyl ester monomer; (a3) 0.0 to 5.0 wt. % of at least one monomer which bears at least two ethylenically unsaturated groups; (b) 1.0 to 70.0 wt. % of at least one polymerization catalyst or initiator; (c) 0.0 to 89.0 wt.Type: ApplicationFiled: April 10, 2018Publication date: October 25, 2018Inventors: Andreas Taden, Ann-Christin Bijlard, Anne Hansen, Katharina Landfester
-
Publication number: 20180258213Abstract: The present invention relates to methods for curing alkenyl ether groups-containing polyurethanes with moisture-reactive end groups by means of a two-stage curing process. The invention further relates to alkenyl ether group-containing polyurethanes with silicon-containing end groups as well as to the cured polymers which can be obtained by means of the method according to the invention and to the products containing them.Type: ApplicationFiled: May 11, 2018Publication date: September 13, 2018Inventors: Andreas Taden, Stefan Kirschbaum, Jan-Erik Damke, Katharina Landfester
-
Publication number: 20180258226Abstract: The invention relates to a method for producing polymers, particularly polyhydroxyurethanes (PHU) from alkenyl ether polyols or pre-polymers that contain monomer units derived from such alkenyl ether polyols, and polythiol compounds, as well as to a method for crosslinking compounds containing alkenyl ether groups, with polythiol compounds. The invention also relates to the polymers and crosslinked polymers that can be obtained using the method according to the invention.Type: ApplicationFiled: May 11, 2018Publication date: September 13, 2018Inventors: Andreas Taden, Stefan Kirschbaum, Katharina Landfester
-
Publication number: 20180196039Abstract: The present invention relates to a test element for the detection of an analyte comprising an enzyme, wherein the enzyme is incorporated in a nanocapsule.Type: ApplicationFiled: April 28, 2016Publication date: July 12, 2018Inventors: Grit Baier, Carina Horn, Katharina Landfester, Anna Musyanovych, Umaporn Paiphansiri
-
Publication number: 20180106785Abstract: A capsule suitable for oxygen and temperature sensing contains: i) at least one first sensitizer compound being capable of energy transfer to triplet oxygen, ii) at least one compound being capable of reacting with and inactivating singlet oxygen, iii) at least one second sensitizer compound being capable of absorbing radiation at a second frequency v2 and of emitting light at a fourth frequency v4, iv) at least one emitter compound, wherein the at least one second sensitizer compound is capable of transferring energy to the at least one emitter compound and wherein the at least one emitter compound, after obtaining energy transferred from the at least one second sensitizer compound, is capable of emitting light at a third frequency v3, wherein the following equation is fulfilled: v3>v2, wherein the upper energy limit of the first triplet energy band of the first sensitizer compound is lower than the lower energy limit of the second triplet energy band of the second sensitizer compound and lower than theType: ApplicationFiled: March 4, 2016Publication date: April 19, 2018Inventors: Katharina Landfester, Yury Avlasevich, Dzmitry Busko, Frederik Wurm, Stanislav Balouchev