Patents by Inventor Monika Lehnert

Monika Lehnert 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).

  • Component having a coating and method for the production thereof
    Patent number: 10059899
    Abstract: The invention relates to a component having a coating containing chromium, nitrogen and carbon, which component is characterized in that the coating comprises a sliding layer having a ceramic phase and an amorphous phase. According to the invention the ceramic phase forms a crystalline ceramic matrix from Crx(C1-yNy) with 0.8=x=1.2 and y>0.7, and the amorphous phase consists of carbon particles that are embedded in substantially uniform distribution in the crystalline ceramic matrix.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: August 28, 2018
    Assignee: MAHLE International GmbH
    Inventors: Monika Lehnert, Kurt Maier
  • Component having a coating and method for the production thereof
    Patent number: 9840766
    Abstract: The invention relates to a component having a coating containing chromium, nitrogen and carbon. According to the invention the coating comprises a sliding layer having a ceramic phase and a carbon phase, the ceramic phase forms a crystalline ceramic phase from Crx(C1-yNy) with 0.8=x=1.2 and y>0.7, and the crystalline ceramic phase and the carbon phase form a layer system of alternating individual layers (A, B), wherein the carbon phase has interstices that are filled with the crystalline ceramic phase.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: December 12, 2017
    Assignee: MAHLE International GmbH
    Inventors: Monika Lehnert, Kurt Maier
  • Steel piston for an internal combustion engine and method for its production
    Patent number: 9581104
    Abstract: A steel piston for an internal combustion engine may include a piston crown and a protective layer disposed on the piston crown. The protective layer may include an adhesion layer of Cr or CrN, which is present on a surface of the piston crown. The protective layer may include a functional layer, which is present on the adhesion layer. The functional layer may have at least one of (i) at least one layer (A) of CrN and (ii) at least one layer (B) of CrOn in the form of [(A)/(B)]a, and a may represent 1 to 100.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: February 28, 2017
    Assignees: Mahle International GmbH, Oerlikon Surface Solutions AG, Pfäffikon
    Inventors: Monika Lehnert, Reinhard Rose, Juergen Ramm, Beno Widrig
  • COMPONENT HAVING A COATING AND METHOD FOR THE PRODUCTION THEREOF
    Publication number: 20150275120
    Abstract: The invention relates to a component having a coating containing chromium, nitrogen and carbon, which component is characterised in that the coating comprises a sliding layer having a ceramic phase and an amorphous phase. According to the invention the ceramic phase forms a crystalline ceramic matrix from Crx(C1-yNy) with 0.8=x=1.2 and y>0.7, and the amorphous phase consists of carbon particles that are embedded in substantially uniform distribution in the crystalline ceramic matrix.
    Type: Application
    Filed: October 23, 2013
    Publication date: October 1, 2015
    Applicant: MAHLE International GmbH
    Inventors: Monika Lehnert, Kurt Maier
  • COMPONENT HAVING A COATING AND METHOD FOR THE PRODUCTION THEREOF
    Publication number: 20150240347
    Abstract: The invention relates to a component having a coating containing chromium, nitrogen and carbon. According to the invention the coating comprises a sliding layer having a ceramic phase and a carbon phase, the ceramic phase forms a crystalline ceramic phase from Crx(C1-yNy) with 0.8=x=1.2 and y>0.7, and the crystalline ceramic phase and the carbon phase form a layer system of alternating individual layers (A, B), wherein the carbon phase has interstices that are filled with the crystalline ceramic phase.
    Type: Application
    Filed: October 23, 2013
    Publication date: August 27, 2015
    Applicant: MAHLE International GmbH
    Inventors: Monika Lehnert, Kurt Maier
  • STEEL PISTON FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR ITS PRODUCTION
    Publication number: 20150107544
    Abstract: A steel piston for an internal combustion engine may include a piston crown and a protective layer disposed on the piston crown. The protective layer may include an adhesion layer of Cr or CrN, which is present on a surface of the piston crown. The protective layer may include a functional layer, which is present on the adhesion layer. The functional layer may have at least one of (i) at least one layer (A) of CrN and (ii) at least one layer (B) of CrOn in the form of [(A)/(B)]a, and a may represent 1 to 100.
    Type: Application
    Filed: October 16, 2014
    Publication date: April 23, 2015
    Inventors: Monika Lehnert, Reinhard Rose, Juergen Ramm, Beno Widrig