Patents by Inventor Sofia Sirak

Sofia Sirak 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 PREPARING HOMO- AND COPOLYMERS OF ALKYL (METH)ACRYLATES WITH LOW RESIDUAL MONOMER CONTENT
    Publication number: 20240043768
    Abstract: A method for the preparation of homo- and copolymers of alkyl (meth)acrylates having a low residual monomer content involves preparing a reaction mixture containing monomers, charging the reaction mixture, heating the reaction mixture, adding an additional monomer after initial monomer conversion, and optional further processing of the reaction mixture. The homo- and copolymers of alkyl (meth)acrylates obtained by this method as useful in lubricant applications.
    Type: Application
    Filed: December 17, 2021
    Publication date: February 8, 2024
    Applicant: Evonik Operations GmbH
    Inventors: Frank-Olaf Mähling, Maria Stimeier, Thomas Schimmel, Stefan Karl Maier, Sofia Sirak
  • MULTIFUNCTIONAL WAX DISPERSANT FOR SUBTERRANEAN CHEMICAL APPLICATIONS
    Publication number: 20230416596
    Abstract: A composition for use as a multifunctional wax dispersant can treat subterranean formations for the recovery of oil and gas from oil and gas wells. A process can be used for the preparation thereof. A method for treating a crude oil with a wax dispersant composition according to the present invention reduces interfacial tension between the crude oil and the treatment fluids in the recovery of oil and gas from crude oil and gas wells.
    Type: Application
    Filed: April 26, 2023
    Publication date: December 28, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Liang Xu, Sofia Sirak, Iryna Zhuk, Claudia Meister
  • MULTIFUNCTIONAL WAX DISPERSANT FOR SUBTERRANEAN CHEMICAL APPLICATIONS
    Publication number: 20230348777
    Abstract: A composition for use as a multifunctional wax dispersant can treat subterranean formations for the recovery of oil and gas from oil and gas wells. A process can be used for the preparation thereof. A method for treating a crude oil with a wax dispersant composition according to the present invention reduces interfacial tension between the crude oil and the treatment fluids in the recovery of oil and gas from crude oil and gas wells.
    Type: Application
    Filed: April 27, 2023
    Publication date: November 2, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Liang XU, Sofia Sirak, Iryna Zhuk, Claudia Meister
  • Vegetable oils with improved low temperature storage stability
    Patent number: 11421180
    Abstract: The invention relates to oil formulation comprising C16-20 oils being stabilized for low temperature storage and preparation processes thereof. The invention also relates to the preparation of specific polymer compounds and their use as stabilizers for low temperature storage of C16-20 oils.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: August 23, 2022
    Assignee: Evonik Operations GmbH
    Inventors: Sofia Sirak, Justin Langston, Gabriel Walkup, Thomas McGregor, Benjamin McFadden
  • Antiwear copolymers and lubricant compositions
    Patent number: 11359042
    Abstract: The present invention relates to copolymers, to a method for the preparation of these copolymers, to the use of these copolymers for reducing wear in a lubricant composition, to lubricant compositions comprising these copolymers, and to the use of these lubricant compositions as an automatic transmission fluid, a continuously variable transmission fluid, an engine oil, a gear oil, or a hydraulic oil.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: June 14, 2022
    Assignee: Evonik Operations GmbH
    Inventors: Sofia Sirak, Dmitriy Shakhvorostov, Ines Berwing, Denise Bingel
  • Polymeric-inorganic nanoparticle compositions, manufacturing process thereof and their use as lubricant additives
    Patent number: 11198833
    Abstract: The invention relates to polymeric-inorganic nanoparticle compositions and preparation processes thereof. The invention also relates to an additive and lubricant compositions comprising these polymeric-inorganic nanoparticle compositions, as well as to the use of these polymeric-inorganic nanoparticle compositions in an oil lubricant formulation to improve tribological performance, in particular to improve extreme pressure performance and friction reduction on metal parts.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: December 14, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Stephan Wieber, Christofer Philipp Kronschnabl, Ronny Sondjaja, Sofia Sirak, Daniel Neß, Roland Wilkens, Günter Schmitt, Can Metehan Turhan
  • Polymeric-inorganic nanoparticle compositions, manufacturing process thereof and their use as lubricant additives
    Patent number: 11180712
    Abstract: The invention relates to polymeric-inorganic nanoparticle compositions and preparation processes thereof. The invention also relates to an additive and lubricant composition comprising these polymeric-inorganic nanoparticle compositions, as well as to the use of these polymeric-inorganic nanoparticle compositions in an oil lubricant formulation to improve tribological performance, in particular to improve anti-friction performance on metal parts.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: November 23, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Stephan Wieber, Sofia Sirak, Daniel Neß, Roland Wilkens, Rebecca Jüstel, Günter Schmitt, Michael Hagemann
  • Polymeric-inorganic particles useful as lubricant additives
    Patent number: 10954466
    Abstract: The invention relates to polymeric-inorganic nanoparticles and preparation processes thereof. The invention also relates to a powder, concentrate and lubricating composition comprising these polymeric-inorganic nanoparticles, to a method of dispersing nanoparticles in lubricating oil, as well as the use of these polymeric-inorganic particles in an oil lubricant formulation to reduce pour point, friction and wear.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: March 23, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Sofia Sirak, Can Metehan Turhan, Daniel Neß, Jennifer Holtzinger, Maximilian Cornelius
  • POLYMERIC-INORGANIC NANOPARTICLE COMPOSITIONS, MANUFACTURING PROCESS THEREOF AND THEIR USE AS LUBRICANT ADDITIVES
    Publication number: 20210062106
    Abstract: The invention relates to polymeric-inorganic nanoparticle compositions and preparation processes thereof. The invention also relates to an additive and lubricant composition comprising these polymeric-inorganic nanoparticle compositions, as well as to the use of these polymeric-inorganic nanoparticle compositions in an oil lubricant formulation to improve tribological performance, in particular to improve anti-friction performance on metal parts.
    Type: Application
    Filed: January 22, 2019
    Publication date: March 4, 2021
    Applicant: Evonik Operations GmbH
    Inventors: Stephan Wieber, Sofia Sirak, Daniel Neß, Roland Wilkens, Rebecca Jüstel, Günter Schmitt, Michael Hagemann
  • POLYMERIC-INORGANIC NANOPARTICLE COMPOSITIONS, MANUFACTURING PROCESS THEREOF AND THEIR USE AS LUBRICANT ADDITIVES
    Publication number: 20200369977
    Abstract: The invention relates to polymeric-inorganic nanoparticle compositions and preparation processes thereof. The invention also relates to an additive and lubricant compositions comprising these polymeric-inorganic nanoparticle compositions, as well as to the use of these polymeric-inorganic nanoparticle compositions in an oil lubricant formulation to improve tribological performance, in particular to improve extreme pressure performance and friction reduction on metal parts.
    Type: Application
    Filed: January 22, 2019
    Publication date: November 26, 2020
    Applicant: Evonik Operations GmbH
    Inventors: Stephan Wieber, Christofer Philipp Kronschnabl, Ronny Sondjaja, Sofia Sirak, Daniel Neß, Roland Wilkens, Günter Schmitt, Can Metehan Turhan
  • VEGETABLE OILS WITH IMPROVED LOW TEMPERATURE STORAGE STABILITY
    Publication number: 20200354646
    Abstract: The invention relates to oil formulation comprising C16-20 oils being stabilized for low temperature storage and preparation processes thereof. The invention also relates to the preparation of specific polymer compounds and their use as stabilizers for low temperature storage of C16-20 oils.
    Type: Application
    Filed: February 5, 2019
    Publication date: November 12, 2020
    Applicant: Evonik Operations GmbH
    Inventors: Sofia Sirak, Justin Langston, Gabriel Walkup, Thomas McGregor, Benjamin McFadden
  • Hydrogenated polybutadienes useful as lubricant additives
    Patent number: 10787623
    Abstract: The invention relates to low molecular weight hydrogenated polybutadienes and to a method for the preparation of these polymers. The invention is also directed to lubricant compositions comprising these polymers and uses thereof.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: September 29, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Sofia Sirak, Holger Pletsch, Marius Kemper
  • ANTIWEAR COPOLYMERS AND LUBRICANT COMPOSITIONS
    Publication number: 20200262953
    Abstract: The present invention relates to copolymers, to a method for the preparation of these copolymers, to the use of these copolymers for reducing wear in a lubricant composition, to lubricant compositions comprising these copolymers, and to the use of these lubricant compositions as an automatic transmission fluid, a continuously variable transmission fluid, an engine oil, a gear oil, or a hydraulic oil.
    Type: Application
    Filed: May 17, 2017
    Publication date: August 20, 2020
    Applicant: Evonik Operations GmbH
    Inventors: Sofia SIRAK, Dmitriy SHAKHVOROSTOV, Ines BERWING, Denise BINGEL
  • POLYMERIC-INORGANIC PARTICLES USEFUL AS LUBRICANT ADDITIVES
    Publication number: 20190264127
    Abstract: The invention relates to polymeric-inorganic nanoparticles and preparation processes thereof. The invention also relates to a powder, concentrate and lubricating composition comprising these polymeric-inorganic nanoparticles, to a method of dispersing nanoparticles in lubricating oil, as well as the use of these polymeric-inorganic particles in an oil lubricant formulation to reduce pour point, friction and wear.
    Type: Application
    Filed: July 24, 2017
    Publication date: August 29, 2019
    Applicant: Evonik Oil Additives GmbH
    Inventors: Sofia SIRAK, Can Metehan TURHAN, Daniel NEß, Jennifer HOLTZINGER, Maximilian CORNELIUS
  • HYDROGENATED POLYBUTADIENES USEFUL AS LUBRICANT ADDITIVES
    Publication number: 20180245013
    Abstract: The invention relates to low molecular weight hydrogenated polybutadienes and to a method for the preparation of these polymers. The invention is also directed to lubricant compositions comprising these polymers and uses thereof.
    Type: Application
    Filed: February 27, 2018
    Publication date: August 30, 2018
    Applicant: Evonik Oil Additives GmbH
    Inventors: Sofia Sirak, Holger Pletsch, Marius Kemper