Patents by Inventor Holger Pletsch

Holger Pletsch 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: 11981877
    Abstract: Acrylate-olefin copolymers and a method for the preparation of these copolymers are provided. Lubricant compositions can contain the aforementioned copolymers. The copolymers are useful 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: May 22, 2023
    Date of Patent: May 14, 2024
    Assignee: Evonik Operations GmbH
    Inventors: Emily Clare Schweißinger, Stefan Karl Maier, Katja Nothdurft, Yvonne Groß-Onnebrink, Dieter Janßen, Holger Pletsch, Stefan Hilf, Denise Kleinschmidt, Sebastian Babik
  • Publication number: 20230383212
    Abstract: Acrylate-olefin copolymers and a method for the preparation of these copolymers are provided. Lubricant compositions can contain the aforementioned copolymers. The copolymers are useful 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: May 22, 2023
    Publication date: November 30, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Emily Clare SCHWEIßINGER, Stefan Karl Maier, Katja Nothdurft, Yvonne Groß-Onnebrink, Dieter Janßen, Holger Pletsch, Stefan Hilf, Denise Kleinschmidt, Sebastian Babik
  • Patent number: 11603425
    Abstract: The present invention relates to hydrogenated linear copolymers comprising butadiene and isoprene monomer units, as well as the process for preparing these copolymers. The invention further relates to a lubricating oil composition comprising one or more hydrogenated linear copolymers according to the invention, as well as to the use of the aforementioned copolymers as a lubricant additive or a synthetic base fluid for lubricant compositions, especially in gear oils, transmission oils, hydraulic oils, engine oils, grease, marine oils or industrial lubricating oils.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: March 14, 2023
    Assignee: Evonik Operations GmbH
    Inventors: Emily Clare Schweissinger, Yvonne Gross-Onnebrink, Holger Pletsch
  • Patent number: 11453837
    Abstract: The invention relates to random copolymers comprising monomers derived from conjugated dienes and alkyl (meth)acrylates, a method for manufacturing the copolymers, lubricant compositions comprising the copolymers, and the use of the copolymers as additives for lubricant compositions or as a base oil for lubricant compositions. The copolymers are favorably used for driving system lubricating oils, hydraulic oils, engine oils and industrial oil formulations.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: September 27, 2022
    Assignee: Evonik Operations GmbH
    Inventors: Holger Pletsch, Emily Clare Schweissinger, Hanna Spohr, Sebastian Reimann, Lars Pera, Marius Weiland, Boris Eisenberg, Dmitriy Shakhvorostov
  • Publication number: 20220017835
    Abstract: The invention relates to random copolymers comprising monomers derived from conjugated dienes and alkyl (meth)acrylates, a method for manufacturing the copolymers, lubricant compositions comprising the copolymers, and the use of the copolymers as additives for lubricant compositions or as a base oil for lubricant compositions. The copolymers are favorably used for driving system lubricating oils, hydraulic oils, engine oils and industrial oil formulations.
    Type: Application
    Filed: October 23, 2019
    Publication date: January 20, 2022
    Inventors: Holger PLETSCH, Emily Clare SCHWEISSINGER, Hanna SPOHR, Sebastian REIMANN, Lars PERA, Marius WEILAND, Boris EISENBERG, Dmitriy SHAKHVOROSTOV
  • Publication number: 20220017654
    Abstract: The invention relates to a process for preparing random copolymers comprising monomers derived from conjugated diener and C7-C24 alkyl(meth)acrylates by free radical solution polymerization.
    Type: Application
    Filed: October 23, 2019
    Publication date: January 20, 2022
    Inventors: Holger PLETSCH, Marius WEILAND, Emily Clare SCHWEISSINGER, Boris EISENBERG
  • Publication number: 20210347927
    Abstract: The present invention relates to hydrogenated linear copolymers comprising butadiene and isoprene monomer units, as well as the process for preparing these copolymers. The invention further relates to a lubricating oil composition comprising one or more hydrogenated linear copolymers according to the invention, as well as to the use of the aforementioned copolymers as a lubricant additive or a synthetic base fluid for lubricant compositions, especially in gear oils, transmission oils, hydraulic oils, engine oils, grease, marine oils or industrial lubricating oils.
    Type: Application
    Filed: May 4, 2021
    Publication date: November 11, 2021
    Inventors: Emily Clare SCHWEISSINGER, Yvonne GROSS-ONNEBRINK, Holger PLETSCH
  • 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
  • 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