Patents by Inventor Andrei Ghicov

Andrei Ghicov 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: 11867086
    Abstract: A coating composition for coating of components of a flow machine, especially a turbomachine such as a gas turbine with compressor, or of a compressor, which are exposed to the fluid stream of the flow machine or of the compressor, wherein the coating composition includes anticorrosion pigments, wherein the coating composition includes hard material particles, and wherein the coating composition is an RT-curing, UV-curing and/or thermally curing coating composition. A component of a flow machine or of a compressor has the coating composition. A method of maintaining a flow machine or a compressor uses the coating composition.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: January 9, 2024
    Assignee: Siemens Energy Global GmbH & Co. KG
    Inventors: Michael Annen, Mario Brockschmidt, Simone Friedle, Andrei Ghicov, Sven Jacobi, Manfred Kaulhausen, Stefan Krause, Rayk Lagodka, Frank Rainer, Christian Scherhag
  • Publication number: 20210156268
    Abstract: A coating composition for coating of components of a flow machine, especially a turbomachine such as a gas turbine with compressor, or of a compressor, which are exposed to the fluid stream of the flow machine or of the compressor, wherein the coating composition includes anticorrosion pigments, wherein the coating composition includes hard material particles, and wherein the coating composition is an RT-curing, UV-curing and/or thermally curing coating composition. A component of a flow machine or of a compressor has the coating composition. A method of maintaining a flow machine or a compressor uses the coating composition.
    Type: Application
    Filed: April 16, 2019
    Publication date: May 27, 2021
    Applicant: Siemens Aktiengesellschaft
    Inventors: Michael Annen, Mario Brockschmidt, Simone Friedle, Andrei Ghicov, Sven Jacobi, Manfred Kaulhausen, Stefan Krause, Rayk Lagodka, Frank Rainer, Christian Scherhag
  • Publication number: 20200308969
    Abstract: A layer system having a metallic substrate, in particular made of a >=9% by weight chromium steel, in particular with roughness of the substrate <=2 ?m and optionally an intervening chromium layer directly on the substrate, in particular made of Cr/CrN, an underlayer or middle layer of AlCr, and an outer layer, in particular outermost layer, of AlCrO, where the AlCr and AlCrO layers in particular are PVD coatings wherein a shark skin effect is achieved with a simple geometric arrangement, and can be used particularly for compressor blades.
    Type: Application
    Filed: October 9, 2018
    Publication date: October 1, 2020
    Applicant: Siemens Aktiengesellschaft
    Inventors: Arturo Flores Renteria, Andrei Ghicov, Torsten Neddemeyer
  • Patent number: 10697068
    Abstract: Provided is a coating system for a substrate, the system including a first, second and third layer. In the system, the first layer is designed as an adhesion promoter layer, the second layer is a ductile metal layer with a columnar structure and the uppermost, third layer is a ceramic oxide layer with a high hardness value. The substrate is ideally an element of a compressor component of a stationary gas turbine. Also disclosed is a method for producing the coating system.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: June 30, 2020
    Assignees: SIEMENS AKTIENGESELLSCHAFT, OERLIKON SURFACE SOLUTIONS AG, PFÄFFIKON
    Inventors: Michael Annen, Jochen Barnikel, Arturo Flores Renteria, Andrei Ghicov, Sascha Hessel, Torsten Neddemeyer, Jürgen Ramm
  • Publication number: 20180195176
    Abstract: Provided is a coating system for a substrate, the system including a first, second and third layer. In the system, the first layer is designed as an adhesion promoter layer, the second layer is a ductile metal layer with a columnar structure and the uppermost, third layer is a ceramic oxide layer with a high hardness value. The substrate is ideally an element of a compressor component of a stationary gas turbine. Also disclosed is a method for producing the coating system.
    Type: Application
    Filed: June 14, 2016
    Publication date: July 12, 2018
    Inventors: MICHAEL ANNEN, JOCHEN BARNIKEL, ARTURO FLORES RENTERIA, ANDREI GHICOV, SASCHA HESSEL, TORSTEN NEDDEMEYER, JÜRGEN RAMM
  • Publication number: 20170276432
    Abstract: A method for operating a condenser, wherein the condenser is designed for condensing water vapor to form water and during operation a condensate having water accumulates in the condenser, wherein on the condensate surface a plurality of floating bodies are arranged on the condensate, wherein the floating bodies float on the condensate, wherein a large number of floating bodies are used in such a way that the condensate surface is covered, wherein the floating bodies are of spherical and/or sphere-like design, and wherein floating bodies with different sizes are used.
    Type: Application
    Filed: August 19, 2015
    Publication date: September 28, 2017
    Applicant: Siemens Aktiengesellschaft
    Inventors: Kai Brune, Stefan Brussk, Nigel-Philip Cox, Daniel Dreier, Tobias Gabl-Zimmek, Andrei Ghicov, Marie Hu, Mario Koebe, Marc Lange, Teresa Pott, Stefan Riemann, Andreas Ulma, David Veltmann, Gerta Zimmer
  • Publication number: 20170183977
    Abstract: A steam turbine system including a steam turbine which has a turbine housing and at least one turbine shaft accommodated in the turbine housing and sealed by seals, a condenser connected fluidically to the steam turbine, an evacuation unit connected fluidically to the condenser, and a dry air source which is connected fluidically to the steam turbine, wherein the steam turbine system is designed in such a way that the evacuation unit is optionally fluidically connectable to the dry air source. A method for preserving components of a steam turbine system to prevent idle-state corrosion is also provided, which the steps: shutting down a steam turbine of the steam turbine system and sucking dry air into the steam turbine using an evacuation unit which additionally functions during intended operation of the steam turbine to exhaust a resulting amount of gas into a condenser.
    Type: Application
    Filed: March 31, 2015
    Publication date: June 29, 2017
    Inventors: Kai Brune, Stefan Brußk, Nigel-Philip Cox, Daniel Dreier, Tobias Gabl-Zimmek, Andrei Ghicov, Marie Hu, Mario Koebe, Marc Lange, Teresa Pott, Stefan Riemann, Andreas Ulma, David Veltmann, Gerta Zimmer
  • Publication number: 20150079417
    Abstract: The corrosion and also the erosion properties of a layer system can be improved by using deposition-hardened particles.
    Type: Application
    Filed: March 27, 2013
    Publication date: March 19, 2015
    Inventors: Jochen Barnikel, Andrei Ghicov, Friedhelm Schmitz