Patents by Inventor Juri Tschernjaew
Juri Tschernjaew 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).
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Publication number: 20230295495Abstract: A process can be used for the preparation of an up-conversion phosphor of the general formula (I): A1-x-y-zB*yB2SiO4:Ln1x,Ln2z, ??(I). The process involves preparing a mixture, introducing the mixture into a reaction chamber of a thermal apparatus, heating the mixture until a thermal treatment temperature is reached with a heating ramp, thermally treating the heated mixture for a holding time of at least 0.02 h, cooling the thermally treated material to room temperature while maintaining a cooling ramp, and obtaining a silicate-based lanthanoid ion-doped phosphor according to formula (I).Type: ApplicationFiled: March 15, 2023Publication date: September 21, 2023Applicant: Evonik Operations GmbHInventors: Simone SCHULTE, Michael Huth, Stefan Fischer, Christina Janke, Juri Tschernjaew
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Publication number: 20230295496Abstract: A process can be used for the preparation of an up-conversion phosphor of the general formula (I) The process involves providing i) at least one lanthanoid salt, ii) a silicate or a silicon dioxide, iii) at least one alkaline earth metal salt and at least one alkali metal salt, and iv) at least one flux. The process then involves either mixing components i), ii), iii) and iv) by grinding to obtain a mixture; or mixing components i), ii), iii) and iv) in an organic polar or nonpolar solvent that is not a protic solvent by grinding to obtain a mixture, and precalcining the mixture. The process further involves calcining the mixture, and obtaining a silicate-based up-conversion phosphor of the general formula (I), preferably after cooling the material. At least 3.5% by weight of flux is used, based on the total amount of the reactants.Type: ApplicationFiled: March 16, 2023Publication date: September 21, 2023Applicant: Evonik Operations GmbHInventors: Simone Schulte, Michael Huth, Stefan Fischer, Christina Janke, Juri Tschernjaew
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Publication number: 20220395461Abstract: The invention relates to solid particles containing solid primary particles that consist essentially of native cellulose and optionally a binder, to the production and use thereof.Type: ApplicationFiled: November 5, 2020Publication date: December 15, 2022Applicant: Evonik Operations GmbHInventors: Georg DUERR, Sibylle SCHLEGEL-KACHEL, Johannes OEHRLEIN, Juri TSCHERNJAEW, Birte BEINE, Victor BAUDRON, Fabian-Pascal SCHMIED
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Publication number: 20220325176Abstract: A water-based curable composition, for production of coatings having an antimicrobial property, contains at least one film-forming polymer, optionally at least one additive and/or at least one curing agent, and at least one up-conversion phosphor of the general formula (I): A1-x-y-zB*yB2SiO4:Ln1x,Ln2z. In the general formula (I), x=0.0001-0.0500; z=0.0000 or z=0.0001 to 0.3000 with the proviso that: y=x+z; A is selected from Mg, Ca, Sr and Ba; B is selected from Li, Na, K. Rb and Cs; B* is selected from Li, Na and K; and preferably B and B* are not the same. Additionally, Ln1 is selected from praseodymium (Pr), erbium (Er), and neodymium (Nd); and Ln2 is gadolinium (Gd). The phosphor, as a result of an aftertreatment, includes at least one material which has a band gap of greater than 6.0 electronvolts (eV) and is hydrolysis-stable.Type: ApplicationFiled: April 11, 2022Publication date: October 13, 2022Applicant: Evonik Operations GmbHInventors: Simone SCHULTE, Markus Hallack, Michael Huth, Juri Tschernjaew, Stefan Fischer, Thomas Jüstel, Franziska Schröder, Sven Reetz
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Patent number: 11427506Abstract: Process for producing a thermally insulating mixture comprising hydrophobic silica, in which a) a pulverulent carrier material selected from the group consisting of precipitated silicas, SiO2 aerogels, pearlites and mixtures thereof is coated with a liquid silicon compound, where the liquid silicon compound has at least one alkyl group and a boiling point of less than 200° C., and b) the pulverulent carrier material that has thus been coated with the liquid silicon compound is mixed with a composition comprising a pulverulent hydrophilic fumed silica and the mixture is subjected to thermal treatment at more than 40° C. and c) any unreacted silicon compound is subsequently removed from the thermally treated mixture, thus giving the thermally insulating mixture comprising hydrophobic silica.Type: GrantFiled: July 13, 2017Date of Patent: August 30, 2022Assignee: Evonik Operations GmbHInventors: Thorsten Schultz, Matthias Geisler, Maciej Olek, Juri Tschernjaew, Hark-Oluf Asbahr, Gabriele Gärtner
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Publication number: 20220015373Abstract: Dried and stable biological compositions may have high colony-forming units. Such compositions may include (1) a substrate and (2) micro-organism(s) loaded onto the surface of the substrate, wherein the composition has a total moisture content of about 0.01 wt. % to about 15 wt. %, preferably, about 0.01 wt. % to about 8 wt. %, preferably, about 3 wt. % to about 8 wt. %, preferably, about 5 wt. % to about 8 wt. %, still preferably, selected from 3 wt. %, 5 wt. % and 7 wt. %.Type: ApplicationFiled: November 21, 2019Publication date: January 20, 2022Applicant: Evonik Operations GmbHInventors: Christopher PROULX, Alexander PAASCHE, Mathias DERNEDDE, Sibylle SCHLEGEL-KACHEL, Juri TSCHERNJAEW, Jing WANG, Stephen MOLLER, Max BRAUN, Avaniek CABALES, Stefan REMELÉ, Eric G. LUNDQUIST, Saiid MOHAMMED
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Patent number: 10669401Abstract: The invention relates to a plastics-covered mercaptosilane-wax mixture, where the plastic of the plastics covering is selected from the group of polypropylene, polyethylene, ethylene-vinyl acetate copolymer and mixtures of the abovementioned plastics with melting point from 70 to 170° C., and the mercaptosilane-wax mixture comprises at least one mercaptosilane of the general formula I and at least one wax with congealing point from 30 to 160° C. The plastics-covered mercaptosilane-wax mixture can be used in rubber mixtures.Type: GrantFiled: April 23, 2015Date of Patent: June 2, 2020Assignee: EVONIK OPERATIONS GMBHInventors: Caren Röben, Andrea Korch, Sabine Leick, Kathrin Kunowa, Juri Tschernjaew
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Publication number: 20190276358Abstract: Process for producing a thermally insulating mixture comprising hydrophobic silica, in which a) a pulverulent carrier material selected from the group consisting of precipitated silicas, SiO2 aerogels, pearlites and mixtures thereof is coated with a liquid silicon compound, where the liquid silicon compound has at least one alkyl group and a boiling point of less than 200° C., and b) the pulverulent carrier material that has thus been coated with the liquid silicon compound is mixed with a composition comprising a pulverulent hydrophilic fumed silica and the mixture is subjected to thermal treatment at more than 40° C. and c) any unreacted silicon compound is subsequently removed from the thermally treated mixture, thus giving the thermally insulating mixture comprising hydrophobic silica.Type: ApplicationFiled: July 13, 2017Publication date: September 12, 2019Applicant: Evonik Degussa GmbHInventors: Thorsten SCHULTZ, Matthias GEISLER, Maciej OLEK, Juri TSCHERNJAEW, Hark-Oluf ASBAHR, Gabriele GÄRTNER
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Patent number: 10308820Abstract: A paint system contains an anti-fouling metal oxide and a fumed silica, wherein the fumed silica has a BET surface area of 150 to 400 m2/g, a tamped density of 100 to 300 g/l and a thickening of less than 500 mPas.Type: GrantFiled: March 10, 2016Date of Patent: June 4, 2019Assignee: Evonik Degussa GmbHInventors: Georg Duerr, Magdalena Kern, Ruediger Mertsch, Juergen Meyer, Guenther Michael, Juri Tschernjaew
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Publication number: 20180100071Abstract: A paint system contains an anti-fouling metal oxide and a fumed silica, wherein the fumed silica has a BET surface area of 150 to 400 m2/g, a tamped density of 100 to 300 g/l and a thickening of less than 500 mPas.Type: ApplicationFiled: March 10, 2016Publication date: April 12, 2018Applicant: Evonik Degussa GmbHInventors: Georg DUERR, Magdalena KERN, Ruediger MERTSCH, Juergen MEYER, Guenther MICHAEL, Juri TSCHERNJAEW
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Publication number: 20170233552Abstract: The invention relates to a plastics-covered mercaptosilane-wax mixture, where the plastic of the plastics covering is selected from the group of polypropylene, polyethylene, ethylene-vinyl acetate copolymer and mixtures of the abovementioned plastics with melting point from 70 to 170° C., and the mercaptosilane-wax mixture comprises at least one mercaptosilane of the general formula I and at least one wax with congealing point from 30 to 160° C. The plastics-covered mercaptosilane-wax mixture can be used in rubber mixtures.Type: ApplicationFiled: April 23, 2015Publication date: August 17, 2017Applicant: EVONIK DEGUSSA GMBHInventors: Caren RÖBEN, Andrea KORCH, Sabine LEICK, Kathrin KUNOWA, Juri TSCHERNJAEW
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Patent number: 9512306Abstract: The invention relates to mercaptosilane-polymer blends comprising at least one mercaptosilane of the general formula I and at least one polymer selected from the group of polypropylene, polyethylene and ethylene-vinyl acetate. They are produced by mixing the mercaptosilane of the general formula I with the polymer. They can be used in rubber mixtures.Type: GrantFiled: February 4, 2014Date of Patent: December 6, 2016Assignee: EVONIK DEGUSSA GmbHInventors: Torsten Peterle, Anke Blume, Jaroslaw Monkiewicz, Andrea Korch, Juri Tschernjaew, Kathrin Kunowa, Michael Klose
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Patent number: 9248319Abstract: The present invention relates to functional composite particles for the oral care sector, more particularly for toothpastes and mouthwashes, which are charged with active ingredients which ensure a long-term antimicrobial or antibacterial effect in the oral cavity and hence reduce the formation of plaque and halitosis. The invention further relates to a process for producing these composite particles and also to their use for producing oral hygiene articles.Type: GrantFiled: August 6, 2010Date of Patent: February 2, 2016Assignee: Evonik DegussaInventors: Wojciech Pisula, Stephanie Schäffer, Juri Tschernjaew, Arnold Storeck, Rainer Hahn
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Publication number: 20150353734Abstract: The invention relates to mercaptosilane-polymer blends comprising at least one mercaptosilane of the general formula I and at least one polymer selected from the group of polypropylene, polyethylene and ethylene-vinyl acetate. They are produced by mixing the mercaptosilane of the general formula I with the polymer. They can be used in rubber mixtures.Type: ApplicationFiled: February 4, 2014Publication date: December 10, 2015Inventors: Torsten PETERLE, Anke BLUME, Jaroslaw MONKIEWICZ, Andrea KORCH, Juri TSCHERNJAEW, Kathrin KUNOWA, Michael KLOSE
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Patent number: 9199211Abstract: The present invention relates to storage-stable product systems having high latency and good mechanical stability, which are suitable, inter alia, for premix formulations. Furthermore, the present invention relates to a method for producing the formulations according to the invention and the use thereof.Type: GrantFiled: February 2, 2009Date of Patent: December 1, 2015Assignee: Evonik Degussa GmbHInventors: Juri Tschernjaew, Patrik Stenner, Wojciech Pisula, Claus-Peter Drexel, Martina Gottheis, Tanja Seitz, Martin G. Hitzler
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Patent number: 8597789Abstract: The present invention relates to innovative antifouling additives, to a process for producing them, to coating systems comprising the antifouling systems of the invention, to a process for producing the coating systems, and to the use of the antifouling additives and coating systems of the invention for preventing the underwater fouling of surfaces of objects which are in contact or come into contact with water.Type: GrantFiled: August 5, 2010Date of Patent: December 3, 2013Assignee: Evonik Degussa GmbHInventors: Katharina Schulz, Rüdiger Mertsch, Jürgen Meyer, Günther Michael, Matthias Rochnia, Thorsten Schultz, Juri Tschernjaew
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Patent number: 8475576Abstract: The present invention relates to a component for producing vacuum insulation systems, comprising at least one insulation layer which is surrounded by a casing, wherein the gas pressure in the insulation layer can be reduced by means provided in the component, wherein the means for reducing the gas pressure is embodified as activatable. The present invention further describes a vacuum insulation system comprising a component according to the invention.Type: GrantFiled: July 9, 2009Date of Patent: July 2, 2013Assignee: Evonik Degussa GmbHInventors: Georg Markowz, Thorsten Schultz, Juri Tschernjaew, Farid Usmanov, Wojciech Pisula, Ruediger Schuette
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Publication number: 20110129398Abstract: The present invention relates to a component for producing vacuum insulation systems, comprising at least one insulation layer which is surrounded by a casing, wherein the gas pressure in the insulation layer can be reduced by means provided in the component, wherein the means for reducing the gas pressure is embodified as activatable. The present invention further describes a vacuum insulation system comprising a component according to the invention.Type: ApplicationFiled: July 9, 2009Publication date: June 2, 2011Applicant: EVONIK DEGUSSA GmbHInventors: Georg Markowz, Thorsten Schultz, Juri Tschernjaew, Farid Usmanov, Wojciech Pisula, Ruediger Schuette
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Publication number: 20110078920Abstract: A method of improving perspiration absorbency in a shoe or boot using particulate amorphous silica as an absorbent in insoles for shoes and/or boots, as well as a shoe insole containing an absorbent which contains particulate amorphous silica, and footware containing the insole.Type: ApplicationFiled: June 17, 2009Publication date: April 7, 2011Applicant: EVONIK DEGUSSA GmbHInventors: Juri Tschernjaew, Maya Krapfl, Patrick Stenner, Michael Beyer, Harald Haeger, Dirk Heinrich, Martina Gottheis
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Publication number: 20110037021Abstract: The present invention relates to storage-stable product systems having high latency and good mechanical stability, which are suitable, inter alia, for premix formulations. Furthermore, the present invention relates to a method for producing the formulations according to the invention and the use thereof.Type: ApplicationFiled: February 2, 2009Publication date: February 17, 2011Inventors: Juri Tschernjaew, Patrik Stenner, Wojciech Pisula, Claus-Peter Drexel, Martina Gottheis, Tanja Seitz, Martin G. Hitzler