Patents by Inventor Ilias Papagiannis

Ilias Papagiannis 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).

  • Turbine blade and steam turbine including the same
    Patent number: 11441428
    Abstract: A turbine blade includes an airfoil portion having a pressure surface and a suction surface each of which extends between a leading edge and a trailing edge, and a platform including an end wall to which a base-end portion of the airfoil portion is connected. The end wall includes a concave portion on suction surface disposed at least in a region of suction surface of the end wall, and a convex portion on pressure surface disposed at least in a region of pressure surface of the end wall. The concave portion on suction surface has a bottom point located on an axially upstream side of a tangent point on the suction surface, the suction surface having a tangential line extending in an axial direction through the tangent point.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: September 13, 2022
    Assignee: MITSUBISHI POWER, LTD.
    Inventors: Shigeki Senoo, Kazuhiro Momma, Reza Abhari, Anestis Kalfas, Ilias Papagiannis, Vahid Iranidokht
  • TURBINE BLADE AND STEAM TURBINE INCLUDING THE SAME
    Publication number: 20220106883
    Abstract: A turbine blade includes an airfoil portion having a pressure surface and a suction surface each of which extends between a leading edge and a trailing edge, and a platform including an end wall to which a base-end portion of the airfoil portion is connected. The end wall includes a concave portion on suction surface disposed at least in a region of suction surface of the end wall, and a convex portion on pressure surface disposed at least in a region of pressure surface of the end wall. The concave portion on suction surface has a bottom point located on an axially upstream side of a tangent point on the suction surface, the suction surface having a tangential line extending in an axial direction through the tangent point.
    Type: Application
    Filed: October 21, 2019
    Publication date: April 7, 2022
    Applicant: MITSUBISHI POWER, LTD.
    Inventors: Shigeki Senoo, Kazuhiro Momma, Reza Abhari, Anestis Kalfas, Ilias Papagiannis, Vahid Iranidokht