Patents by Inventor Papken Ehiasar Hovsepian

Papken Ehiasar Hovsepian 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).

  • Publication number: 20180334739
    Abstract: A method for pre-treating a substrate for surface coating includes subjecting the substrate to metal ions and noble gas ions selected from the group of argon-ions, krypton-ions, neon-ions, xenon-ions and helium-ions in a vacuum chamber and applying a negative electrical potential on the substrate. The substrate is pre-treated in at least two steps that are performed subsequently in the vacuum chamber. The first step includes providing a plasma of predominantly noble gas ions selected from the group of argon-ions, krypton-ions, neon-ions, xenon-ions and helium-ions in the vacuum chamber, and applying a first negative electrical potential on the substrate. The second step includes providing a plasma of predominantly metal ions in the vacuum chamber, and applying a second negative electrical potential on the substrate, wherein the first electrical potential is lower than the second electrical potential, and wherein the magnitude of the first negative potential is 100-1500 V.
    Type: Application
    Filed: October 20, 2016
    Publication date: November 22, 2018
    Inventors: Carl-Fredrik CARLSTROM, Mats AHLGREN, Arutiun Papken EHIASARIAN, Papken Ehiasar HOVSEPIAN
  • Publication number: 20110209988
    Abstract: The present invention relates to a process for forming a razor blade. The process includes the steps of: a) providing a substrate, b) forming a wedge-shaped sharpened edge on the substrate that has an included angle of less than thirty degrees and a tip radius of less than 1,000 angstroms, c) placing the substrate in a vacuum chamber, d) placing a first solid target in the vacuum chamber, e) providing a gas to be ionized in the vacuum chamber, and f) generating ions from the first solid target by applying a negative voltage to the first solid target in pulses, the ions forming a thin film coating on the wedge-shaped sharpened edge on the substrate.
    Type: Application
    Filed: May 12, 2011
    Publication date: September 1, 2011
    Inventors: John Madeira, Arutiun Papken Ehiasarian, Papken Ehiasar Hovsepian, Krassimir Grigorov Marchev, Neville Sonnenberg
  • Patent number: 7966909
    Abstract: The present invention relates to a process for forming a razor blade. The process includes the steps of: a) providing a substrate, b) forming a wedge-shaped sharpened edge on the substrate that has an included angle of less than thirty degrees and a tip radius of less than 1,000 angstroms, c) placing the substrate in a vacuum chamber, d) placing a first solid target in the vacuum chamber, e) providing a gas to be ionized in the vacuum chamber, and f) generating ions from the first solid target by applying a negative voltage to the first solid target in pulses, the ions forming a thin film coating on the wedge-shaped sharpened edge on the substrate.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: June 28, 2011
    Assignee: The Gillette Company
    Inventors: John Madeira, Arutiun Papken Ehiasarian, Papken Ehiasar Hovsepian, Krassimir Grigorov Marchev, Neville Sonnenberg
  • Publication number: 20090025512
    Abstract: The present invention relates to a process for forming a razor blade. The process includes the steps of: a) providing a substrate, b) forming a wedge-shaped sharpened edge on the substrate that has an included angle of less than thirty degrees and a tip radius of less than 1,000 angstroms, c) placing the substrate in a vacuum chamber, d) placing a first solid target in the vacuum chamber, e) providing a gas to be ionized in the vacuum chamber, and f) generating ions from the first solid target by applying a negative voltage to the first solid target in pulses, the ions forming a thin film coating on the wedge-shaped sharpened edge on the substrate.
    Type: Application
    Filed: July 25, 2007
    Publication date: January 29, 2009
    Inventors: John Madeira, Arutiun Papken Ehiasarian, Papken Ehiasar Hovsepian, Krassimir Grigorov Marchev, Neville Sonnenberg
  • Patent number: 7160635
    Abstract: This invention relates to coatings for the protection of substrates operating at moderately elevated temperatures, and, more particularly, for the protection of titanium-alloy aircraft and stationary gas turbine components as well as engine components for automotive applications, articles having such coatings and a method for their production.
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: January 9, 2007
    Assignee: Sheffield Hallam University
    Inventors: Christoph Leyens, Papken Ehiasar Hovsepian, Wolf-Dieter Munz
  • Patent number: 7081186
    Abstract: A PVD process for coating substrates, wherein the substrate is pre-treated in the vapor of a pulsed, magnetic field-assisted cathode sputtering operation, and during pre-treatment a magnetic field arrangement of the magnetron cathode type, with a strength of the horizontal component in front of the target of 100 to 1500 Gauss, is used for magnetic field-assistance, and after pre-treatment further coating is effected by means of cathode sputtering and the power density of the pulsed discharge during pre-treatment is greater than 1000 W.cm?2.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: July 25, 2006
    Assignee: Sheffield Hallam University
    Inventors: Arutiun Papken Ehiasarian, Papken Ehiasar Hovsepian, Wolf-Dieter Munz