Patents by Inventor Ilgnatius Wuled Lenggoro

Ilgnatius Wuled Lenggoro 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).

  • Phosphor and its production process
    Patent number: 6712993
    Abstract: A process for producing fine phosphor particles having a high crystallinity, having a small amount of aggregated particles and comprising fine particles, thus capable of forming a homogeneous and dense high brightness fluorescent layer when applied to e.g. a cathode ray tube, a fluorescent lamp or PDP, and having a high purity, a uniform chemical composition and excellent emission properties, at a low cost, is provided. A process for producing a phosphor, which comprises heating droplets of a solution containing metal elements constituting the phosphor to carry out pyrolysis to obtain the phosphor, wherein the above heating is carried out in the coexistence of an additive comprising a metal or a metal compound to carry out the pyrolysis at an average crystal growth rate of at least 0.002 &mgr;m3/sec.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: March 30, 2004
    Assignees: Kasei Optonix, Ltd., Mitsubishi Chemical Corporation
    Inventors: Naoto Kijima, Yasuo Shimomura, Tetsuji Umebara, Ilgnatius Wuled Lenggoro, Kikuo Okuyama
  • Phosphor and its production process
    Publication number: 20030094596
    Abstract: A process for producing fine phosphor particles having a high crystallinity, having a small amount of aggregated particles and comprising fine particles, thus capable of forming a homogeneous and dense high brightness fluorescent layer when applied to e.g. a cathode ray tube, a fluorescent lamp or PDP, and having a high purity, a uniform chemical composition and excellent emission properties, at a low cost, is provided. A process for producing a phosphor, which comprises heating droplets of a solution containing metal elements constituting the phosphor to carry out pyrolysis to obtain the phosphor, wherein the above heating is carried out in the coexistence of an additive comprising a metal or a metal compound to carry out the pyrolysis at an average crystal growth rate of at least 0.002 &mgr;m3/sec.
    Type: Application
    Filed: December 23, 2002
    Publication date: May 22, 2003
    Applicant: Kasei Optonix, Ltd.
    Inventors: Naoto Kijima, Yasuo Shimomura, Tetsuji Umebara, Ilgnatius Wuled Lenggoro, Kikuo Okuyama