Patents by Inventor Petra K{hacek over (s)}írová

Petra K{hacek over (s)}írová 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).

  • Method of low-temperature plasma generation, method of an electrically conductive or ferromagnetic tube coating using pulsed plasma and corresponding devices
    Patent number: 11651937
    Abstract: The present invention resides in the unifying idea of synchronizing a positive voltage pulse supplied to an electrically conductive or ferromagnetic tube and a exciting negative voltage pulse on a hollow cathode induced on the background of a high-frequency capacitive discharge. In one embodiment, the invention relates to a method of generating low-temperature plasma in a vacuum chamber comprising a hollow cathode and an electrode, the method comprising the step of igniting the pulsed DC discharge in the hollow cathode wherein the positive voltage pulse at least partially overlaps with the negative voltage pulse, and the positive voltage pulse at least partially overlaps with the negative voltage pulse on the hollow cathode. In another embodiment, the present invention relates to a method of coating the inner walls of hollow tubes which utilizes the above-mentioned low-temperature plasma generation process.
    Type: Grant
    Filed: November 1, 2020
    Date of Patent: May 16, 2023
    Assignee: FYZIKALINI USTAV AV CR, V.V.I.
    Inventors: Zden{hacek over (e)}k Hubi{hacek over (c)}ka, Martin {hacek over (C)}ada, Petra K{hacek over (s)}írová, Miloslav Klinger
  • METHOD OF LOW-TEMPERATURE PLASMA GENERATION, METHOD OF AN ELECTRICALLY CONDUCTIVE OR FERROMAGNETIC TUBE COATING USING PULSED PLASMA AND CORRESPONDING DEVICES
    Publication number: 20210050181
    Abstract: The present invention resides in the unifying idea of synchronizing a positive voltage pulse supplied to an electrically conductive or ferromagnetic tube and a exciting negative voltage pulse on a hollow cathode induced on the background of a high-frequency capacitive discharge. In one embodiment, the invention relates to a method of generating low-temperature plasma in a vacuum chamber comprising a hollow cathode and an electrode, the method comprising the step of igniting the pulsed DC discharge in the hollow cathode wherein the positive voltage pulse at least partially overlaps with the negative voltage pulse, and the positive voltage pulse at least partially overlaps with the negative voltage pulse on the hollow cathode. In another embodiment, the present invention relates to a method of coating the inner walls of hollow tubes which utilizes the above-mentioned low-temperature plasma generation process.
    Type: Application
    Filed: November 1, 2020
    Publication date: February 18, 2021
    Inventors: Zdenek Hubicka, Martin Cada, Petra K{hacek over (s)}írová, Miloslav KLINGER