Patents by Inventor Leszek Piotr Sierzfutowski

Leszek Piotr Sierzfutowski 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).

  • Process and apparatus for obtaining bulk monocrystalline gallium-containing nitride
    Patent number: 7252712
    Abstract: The present invention refers to an ammonobasic method for preparing a gallium-containing nitride crystal, in which gallium-containing feedstock is crystallized on at least one crystallization seed in the presence of an alkali metal-containing component in a supercritical nitrogen-containing solvent. The method can provide monocrystalline gallium-containing nitride crystals having a very high quality.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: August 7, 2007
    Assignees: Ammono Sp. z o.o., Nichia Corporation
    Inventors: Robert Tomasz Dwilinski, Roman Marek Doradzinski, Leszek Piotr Sierzfutowski, Jerzy Garczynski, Yasuo Kanbara
  • Process and apparatus for obtaining bulk monocrystalline gallium-containing nitride
    Publication number: 20040139912
    Abstract: The present invention refers to an ammonobasic method for preparing a gallium-containing nitride crystal, in which gallium-containing feedstock is crystallized on at least one crystallization seed in the presence of an alkali metal-containing component in a supercritical nitrogen-containing solvent. The method can provide monocrystalline gallium-containing nitride crystals having a very high quality.
    Type: Application
    Filed: December 5, 2003
    Publication date: July 22, 2004
    Inventors: Robert Tomasz Dwilinski, Roman Marek Doradzinski, Leszek Piotr Sierzfutowski, Jerzy Garczynski, Yasuo Kanbara