Patents by Inventor Katrin SCHOLLER

Katrin SCHOLLER 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).

  • Process for the preparation of polyalkyl (meth)acrylate polymers
    Publication number: 20230174695
    Abstract: A novel process can be used for the preparation of polyalkyl (meth)acrylate polymers with improved compositional distribution, which leads to better producibility, solubility, and improved performance of the polymers in lubricant compositions, especially in engine oil formulations.
    Type: Application
    Filed: April 28, 2021
    Publication date: June 8, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Katrin Schöller, Sarah Lippert, Wolfgang Tschepat, Fabian Ziegler
  • Acrylate-olefin copolymers as high viscosity base fluids
    Patent number: 11618797
    Abstract: The invention relates to acrylate-olefin copolymers and to a method for preparing these polymers. The present invention is also directed to lubricant compositions comprising these copolymers, and to the use of these copolymers as a lubricant additive or a synthetic base fluid in a lubricating oil composition, preferably in a gear oil composition, a transmission oil composition, a hydraulic oil composition, an engine oil composition, a marine oil composition, an industrial lubricating oil composition or in grease.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: April 4, 2023
    Assignee: Evonik Operations GmbH
    Inventors: Stefan Karl Maier, Dieter Janßen, Fabian Ziegler, Katrin Schöller, Stefan Hilf
  • ACRYLATE-OLEFIN COPOLYMERS AS HIGH VISCOSITY BASE FLUIDS
    Publication number: 20220195091
    Abstract: The invention relates to acrylate-olefin copolymers and to a method for preparing these polymers. The present invention is also directed to lubricant compositions comprising these copolymers, and to the use of these copolymers as a lubricant additive or a synthetic base fluid in a lubricating oil composition, preferably in a gear oil composition, a transmission oil composition, a hydraulic oil composition, an engine oil composition, a marine oil composition, an industrial lubricating oil composition or in grease.
    Type: Application
    Filed: December 6, 2021
    Publication date: June 23, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Stefan Karl Maier, Dieter Janßen, Fabian Ziegler, Katrin Schöller, Stefan Hilf
  • Comb polymers comprising imide functionality
    Patent number: 11072677
    Abstract: Selected comb polymers include specified amounts of macromonomer and imide functionalization. Further, a method is useful for the preparation of such comb polymers. Lubricant compositions including such comb polymers are useful for reducing wear and fuel consumption of lubricant compositions, especially of engine oil (EO) compositions.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: July 27, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Katrin Schöller, Jennifer Holtzinger, Fabian Ziegler, Klaus Schimossek, Frank Lauterwasser
  • Comb polymers for improving Noack evaporation loss of engine oil formulations
    Patent number: 11015139
    Abstract: A comb polymer can be used for reducing a Noack evaporation loss of a lubricant composition, especially of an engine oil composition. Application of the comb polymer to the lubricant composition can bring about the desired reduction. The comb polymer can include specified amounts of macromonomer and alkyl acrylates. Resulting lubricant compositions can include the comb polymer.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: May 25, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Katrin Schöller, Stefan Maier, Sarah Lippert, Klaus Schimossek
  • Device for measuring the concentration of an analyte in the blood or tissue of an animal or a human, particularly a premature infant, in a self-calibrating manner
    Patent number: 11006866
    Abstract: The invention relates to a device for measuring the concentration of an analyte in the blood or tissue of a an animal or a human, particularly a premature infant, wherein for measuring said concentration the device comprises a means (30) comprising at least a first and a second permeability with respect to said analyte, wherein the first permeability for said analyte differs from the second permeability for the analyte. Further, the invention relates to a corresponding method.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: May 18, 2021
    Assignees: UNIVERSITAT ZURICH, EIDGENOSSISCHE MATERIALPRUFUNGS—UND FORSCHUNGSANSTALT
    Inventors: Lukas Baumann, Katrin Scholler, Markus Rothmaier, Lukas Scherer, Rene Rossi, Damien Paul Joseph Henri De Courten, Martin Wolf
  • Viscosity index improvers with defined molecular weight distributions
    Patent number: 10731097
    Abstract: Polyalkyl(meth)acrylate based comb polymers with weight-average molecular weights of 700,000 g/mol or greater and number-average molecular weights of 130,000 g/mol or greater can be used to improve the high temperature-high shear performance of lubricant compositions, especially of engine oil (EO) compositions. These polymers can be obtained in a reaction mixture comprising monomers, a dilution oil, and an initiator. The resulting lubricant compositions can have improved kinematic viscosity and high temperature high shear performance.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: August 4, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Katrin Schöller, Sarah Lippert, Wolfgang Tschepat, Klaus Schimossek
  • COMB POLYMERS FOR IMPROVING NOACK EVAPORATION LOSS OF ENGINE OIL FORMULATIONS
    Publication number: 20200224116
    Abstract: A comb polymer can be used for reducing a Noack evaporation loss of a lubricant composition, especially of an engine oil composition. Application of the comb polymer to the lubricant composition can bring about the desired reduction. The comb polymer can include specified amounts of macromonomer and alkyl acrylates. Resulting lubricant compositions can include the comb polymer.
    Type: Application
    Filed: March 24, 2020
    Publication date: July 16, 2020
    Applicant: Evonik Operations GmbH
    Inventors: Katrin Schöller, Stefan Maier, Sarah Lippert, Klaus Schimossek
  • Comb Polymers Comprising Imide Functionality
    Publication number: 20200216596
    Abstract: Selected comb polymers include specified amounts of macromonomer and imide functionalization. Further, a method is useful for the preparation of such comb polymers. Lubricant compositions including such comb polymers are useful for reducing wear and fuel consumption of lubricant compositions, especially of engine oil (EO) compositions.
    Type: Application
    Filed: July 12, 2018
    Publication date: July 9, 2020
    Applicant: Evonik Operations GmbH
    Inventors: Katrin Schöller, Jennifer Holtzinger, Fabian Ziegler, Klaus Schimossek, Frank Lauterwasser
  • Comb polymers for improving Noack evaporation loss of engine oil formulations
    Patent number: 10633610
    Abstract: A comb polymer can be used for reducing a Noack evaporation loss of a lubricant composition, especially of an engine oil composition. Application of the comb polymer to the lubricant composition can bring about the desired reduction. The comb polymer can include specified amounts of macromonomer and alkyl acrylates. Resulting lubricant compositions can include the comb polymer.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: April 28, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Katrin Schöller, Stefan Maier, Sarah Lippert, Klaus Schimossek
  • Functional polyalkyl (meth)acrylates with enhanced demulsibility performance
    Patent number: 10428292
    Abstract: Polyalkyl(meth)acrylate (PAMA) polymers comprising a certain amount of hydroxyl-functionalized alkyl (meth)acrylates can be used for improving the demulsibility performance of high VI lubricating oil compositions. The lubricating oil compositions can be those which are based on apolar base oils, especially hydraulic fluid compositions. The polymers can be comprised in certain lubricating oil compositions.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: October 1, 2019
    Assignee: Evonik Oil Additives GmbH
    Inventors: Stefan Maier, Jürgen Gebhardt, Katrin Schöller, Frank-Olaf Mähling
  • FUNCTIONAL POLYALKYL (METH)ACRYLATES WITH ENHANCED DEMULSIBILITY PERFORMANCE
    Publication number: 20190203147
    Abstract: Polyalkyl(meth)acrylate (PAMA) polymers comprising a certain amount of hydroxyl-functionalized alkyl (meth)acrylates can be used for improving the demulsibility performance of high VI lubricating oil compositions. The lubricating oil compositions can be those which are based on apolar base oils, especially hydraulic fluid compositions. The polymers can be comprised in certain lubricating oil compositions.
    Type: Application
    Filed: August 9, 2017
    Publication date: July 4, 2019
    Applicant: Evonik Oil Additives GmbH
    Inventors: Stefan MAIER, Jürgen GEBHARDT, Katrin SCHÖLLER, Frank-Olaf MÄHLING
  • COMB POLYMERS FOR IMPROVING NOACK EVAPORATION LOSS OF ENGINE OIL FORMULATIONS
    Publication number: 20190203148
    Abstract: A comb polymer can be used for reducing a Noack evaporation loss of a lubricant composition, especially of an engine oil composition. Application of the comb polymer to the lubricant composition can bring about the desired reduction. The comb polymer can include specified amounts of macromonomer and alkyl acrylates. Resulting lubricant compositions can include the comb polymer.
    Type: Application
    Filed: August 28, 2017
    Publication date: July 4, 2019
    Applicant: Evonik Oil Additives GmbH
    Inventors: Katrin Schöller, Stefan Maier, Sarah Lippert, Klaus Schimossek
  • Viscosity Index Improvers with defined Molecular Weight Distributions
    Publication number: 20190071615
    Abstract: Polyalkyl(meth)acrylate based comb polymers with weight-average molecular weights of 700,000 g/mol or greater and number-average molecular weights of 130,000 g/mol or greater can be used to improve the high temperature-high shear performance of lubricant compositions, especially of engine oil (EO) compositions. These polymers can be obtained in a reaction mixture comprising monomers, a dilution oil, and an initiator. The resulting lubricant compositions can have improved kinematic viscosity and high temperature high shear performance.
    Type: Application
    Filed: August 31, 2018
    Publication date: March 7, 2019
    Applicant: Evonik Oil Additives GmbH
    Inventors: Katrin SCHÖLLER, Sarah LIPPERT, Wolfgang TSCHEPAT, Klaus SCHIMOSSEK
  • DEVICE FOR MEASURING THE CONCENTRATION OF AN ANALYTE IN THE BLOOD OR TISSUE OF AN ANIMAL OR A HUMAN, PARTICULARLY A PREMATURE INFANT, IN A SELF-CALIBRATING MANNER
    Publication number: 20170202492
    Abstract: The invention relates to a device for measuring the concentration of an analyte in the blood or tissue of a an animal or a human, particularly a premature infant, wherein for measuring said concentration the device comprises a means (30) comprising at least a first and a second permeability with respect to said analyte, wherein the first permeability for said analyte differs from the second permeability for the analyte. Further, the invention relates to a corresponding method.
    Type: Application
    Filed: July 14, 2015
    Publication date: July 20, 2017
    Applicants: UNIVERSITAT ZURICH, EIDGENOSSISCHE MATERIALPRUFUNGS- UND FORSCHUNGSANS TALT
    Inventors: Lukas BAUMANN, Katrin SCHOLLER, Markus ROTHMAIER, Lukas SCHERER, Rene ROSSI, Damien Paul Joseph Henri DE COURTEN, Martin WOLF