Patents by Inventor Jun-Seok Nho

Jun-Seok Nho 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 for preparing single crystalline zinc sulfide powder for phosphor
    Patent number: 7153485
    Abstract: This invention relates to a method for preparing a Zinc Sulfide powder, and provides a method for preparing a single crystalline powder of Zinc Sulfide (ZnS) a high crystallinity comprising a step of conducting a hydrothermal reaction of a) Zinc Oxide or Zinc acetate as Zinc source and b) thioacetamide or thiourea as Sulfur source at a temperature of 180 to 230° C. and a fluorescent substance using the same as a source.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: December 26, 2006
    Assignee: LG Chem, Ltd.
    Inventors: Jun-Seok Nho, Seung-Beom Cho, Chang-Seok Ryoo, Kwang-Hee Lee, Tae-Hyun Kwon
  • Method for preparing ?-alumina nano powder
    Patent number: 7115243
    Abstract: The present invention relates to a preparation method of ?-alumina nano powder, and more particularly to a preparation method of ?-alumina nano powder that has a uniform particle shape and size distribution, is capable of being produced at a low temperature, and contains less than 20 ppm of alkali metals such as Na and K. the ?-alumina nano powder is prepared by glycolating aluminium alkoxide in glycol solution containing the ?-iron oxide or ?-alumina nucleation seed and carrying out glyco thermal reaction.
    Type: Grant
    Filed: January 3, 2003
    Date of Patent: October 3, 2006
    Assignee: LG Chem, Ltd.
    Inventors: Hye-Jeong Hong, Tae-Hyun Kwon, Seung-Beom Cho, Jun-Seok Nho, Dae-Gon Han
  • Cerium oxide abrasive and slurry containing the same
    Publication number: 20060162260
    Abstract: Disclosed are a cerium oxide abrasive for selectively polishing various SiO2 films and SiO2—Si3N4 films; and a slurry containing the same. The cerium oxide abrasive and the polishing slurry of the present invention have a high polishing rate and are also free from microscratches in a polished surface upon polishing since polycrystalline cerium oxide having a mean crystalline particle size of 5 nm or less is synthesized by using hexagonal cerium carbonate having a hexagonal crystal structure as a raw material of cerium.
    Type: Application
    Filed: January 26, 2006
    Publication date: July 27, 2006
    Applicant: LG CHEM, LTD.
    Inventors: Jun-seok Nho, Myoung-hwan Oh, Jang-yul Kim, Jong-pil Kim, Seung-beom Cho
  • Method for preparing of alpha-alumina nano powder
    Publication number: 20050106096
    Abstract: The present invention relates to a preparation method of ?-alumina nano powder, and more particularly to a preparation method of ?-alumina nano powder that has a uniform particle shape and size distribution, is capable of being produced at a low temperature, and contains less than 20 ppm of alkali metals such as Na and K. the ?-alumina nano powder is prepared by glycolating aluminium alkoxide in glycol solution containing the ?-iron oxide or ?-alumina nucleation seed and carrying out glyco thermal reaction.
    Type: Application
    Filed: January 3, 2003
    Publication date: May 19, 2005
    Inventors: Hye-Jeong Hong, Tae-Hyun Kwon, Seung-Beom Cho, Jun-Seok Nho, Dae-Gon Han
  • Method for preparing single crystalline zns powder for phosphor
    Publication number: 20030172868
    Abstract: This invention relates to a method for preparing a Zinc Sulfide powder, and provides a method for preparing a single crystalline powder of Zinc Sulfide (ZnS) a high crystallinity comprising a step of conducting a hydrothermal reaction of a) Zinc Oxide or Zinc acetate as Zinc source and b) thioacetamide or thiourea as Sulfur source at a temperature of 180 to 230° C. and a fluorescent substance using the same as a source.
    Type: Application
    Filed: March 10, 2003
    Publication date: September 18, 2003
    Inventors: Jun-Seok Nho, Seung-Beom Cho, Chang-Seok Ryoo, Kwang-Hee Lee, Tae-Hyun Kwon