Patents by Inventor Alla Zak

Alla Zak 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).

  • Patent number: 7524481
    Abstract: The present invention is related to an apparatus for the production of inorganic fullerene-like (IF) nanoparticles and nanotubes. The apparatus comprises a chemical reactor, and is further associated with a feeding set up and with a temperature control means for controlling the temperature along the reaction path inside the reactor so as to maintain the temperature to be substantially constant. The invention is further directed to a method for the synthesis of IF-WO3 nanoparticles having spherical shape and having a size up to 0.5 mu m and nanotubes having a length of up to several hundred mu m and a cross-sectional dimension of up to 200 nanometer.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: April 28, 2009
    Assignee: Yeda Research and Development Co., Ltd.
    Inventors: Reshef Tenne, Yishay Feldman, Alla Zak, Rita Rosentsveig
  • Publication number: 20060120947
    Abstract: A process and apparatus are presented for obtaining inorganic fullerene-like nanostructures. A metal oxide is evaporated at predetermined temperature conditions, and is swept towards a reacting zone, to which first and second gas phase reacting agents are concurrently swept. The evaporated metal oxide thus interacts with the first reacting agent and is converted into metal suboxide nanoparticles in the gas phase. The condensing metal suboxide nanoparticles interact with the second reacting agent in the gas phase resulting in substantially pure phase of the inorganic fullerene-like nanoparticles.
    Type: Application
    Filed: January 6, 2006
    Publication date: June 8, 2006
    Applicant: YEDA RESEARCH AND DEVELOPMENT COMPANY LTD.
    Inventors: Reshef Tenne, Yishay Feldman, Alla Zak, Rita Rosentsveig
  • Patent number: 7018606
    Abstract: A process and apparatus are presented for obtaining inorganic fullerene-like nanostructures. A metal oxide is evaporated at predetermined temperature conditions, and is swept towards a reacting zone, to which first and second gas phase reacting agents are concurrently swept. The evaporated metal oxide thus interacts with the first reacting agent and is converted into metal suboxide nanoparticles in the gas phase. The condensing metal suboxide nanoparticles interact with the second reacting agent in the gas phase resulting in substantially pure phase of the inorganic fullerene-like nanoparticles.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: March 28, 2006
    Assignee: Yeda Research and Development Co. Ltd.
    Inventors: Reshef Tenne, Yishay Feldman, Alla Zak, Rita Rosentsveig
  • Publication number: 20040105808
    Abstract: The present invention is related to an apparatus for the production of inorganic fullerene-like (IF) nanoparticles and nanotubes. The apparatus comprises a chemical reactor, and is further associated with a feeding set up and with a temperature control means for controlling the temperature along the reaction path inside the reactor so as to maintain the temperature to be substantially constant. The invention is further directed to a method for the synthesis of IF-WO3 nanoparticles having spherical shape and having a size up to 0.5 mu m and nanotubes having a length of up to several hundred mu m and a cross-sectional dimension of up to 200 nanometer.
    Type: Application
    Filed: May 22, 2003
    Publication date: June 3, 2004
    Inventors: Reshef Tenne, Yishay Feldman, Alla Zak, rita Rosentsveig
  • Publication number: 20040018306
    Abstract: A process and apparatus are presented for obtaining inorganic fullerene-like nanostructures. A metal oxide is evaporated at predetermined temperature conditions, and is swept towards a reacting zone, to which first and second gas phase reacting agent are concurrently swept. The evaporated metal oxide thus interacts with the first reacting agent and is converted into metal suboxide nanoparticles in the gas phase. The condensing metal suboxide nanoparticles interact with the second reacting agent in the gas phase resulting in substantially pure phase of the inorganic fullerene-like nanoparticles.
    Type: Application
    Filed: April 25, 2003
    Publication date: January 29, 2004
    Inventors: Reshef Tenne, Yishay Feldman, Alla Zak, Rita Rosentsveig