Patents by Inventor Roman Marek Doradzi?ski

Roman Marek Doradzi?ski 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).

  • Bulk monocrystalline gallium nitride
    Patent number: 7744697
    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: October 14, 2003
    Date of Patent: June 29, 2010
    Assignees: Nichia Corporation, Ammono SP. Z O.O.
    Inventors: Robert Tomasz Dwiliński, Roman Marek Doradziński, Jerzy Garczyński, Leszek Piotr Sierzputowski, Yasuo Kanbara
  • Process and apparatus for obtaining bulk monocrystalline gallium-containing nitride
    Patent number: 7160388
    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: January 9, 2007
    Assignees: Nichia Corporation, Ammono Sp. z o.o.
    Inventors: Robert Tomasz Dwiliński, Roman Marek Doradziński, Jerzy Garczyński, Leszek Piotr Sierzputowski, Yasuo Kanbara