Patents by Inventor Kehong Zhang

Kehong Zhang 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 an optical ZnS material from zinc and sulfur raw material sources by using a feeding device to replenish the sulfur raw material source
    Patent number: 11746438
    Abstract: The present invention provides an optical ZnS material and a preparation method thereof, wherein the preparation method comprises: charging zinc and sulfur into a first crucible and a feeding device of a chemical vapor deposition furnace, respectively; heating the first crucible, the second crucible and a deposition chamber, and charging sulfur into the second crucible through the feeding device; introducing an inert carrier gas into the first crucible, and introducing an inert carrier gas and hydrogen into the second crucible, flowing the carrier gas containing zinc vapor and sulfur vapor respectively into the deposition chamber through pipelines to deposit ZnS, and supplying the second crucible with sulfur regularly and quantitatively through the feeding device during the deposition process to maintain a saturated vapor pressure of sulfur in a range of 0.8 to 1.8 KPa.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: September 5, 2023
    Assignees: Sinoma Synthetic Crystals Co., Ltd., Beijing Sinoma Synthetic Crystals Co., Ltd.
    Inventors: Xun Qian, Cunxin Huang, Hongtao Xiao, Xu Zhang, Kehong Zhang
  • Optical ZnS Material and Preparation Method Thereof
    Publication number: 20220186400
    Abstract: The present invention provides an optical ZnS material and a preparation method thereof, wherein the preparation method comprises: charging zinc and sulfur into a first crucible and a feeding device of a chemical vapor deposition furnace, respectively; heating the first crucible, the second crucible and a deposition chamber, and charging sulfur into the second crucible through the feeding device; introducing an inert carrier gas into the first crucible, and introducing an inert carrier gas and hydrogen into the second crucible, flowing the carrier gas containing zinc vapor and sulfur vapor respectively into the deposition chamber through pipelines to deposit ZnS, and supplying the second crucible with sulfur regularly and quantitatively through the feeding device during the deposition process to maintain a saturated vapor pressure of sulfur in a range of 0.8 to 1.8 KPa.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 16, 2022
    Inventors: Xun Qian, Cunxin Huang, Hongtao Xiao, Xu Zhang, Kehong Zhang
  • Dopamine D4 receptor antagonists as treatment for attention deficit-hyperactivity disorder
    Patent number: 6747029
    Abstract: A method of inhibiting motor hyperactivity in a mammal exhibiting the symptoms of attention deficit-hyperactivity disorder (ADHD) includes administering to a mammal a dopamine D4 receptor-selective antagonist.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: June 8, 2004
    Assignee: The McLean Hospital Corporation
    Inventors: Ross J. Baldessarini, Kehong Zhang, Frank I. Tarazi
  • Dopamine D4 receptor antagonists as treatment for attention deficit-hyperactivity disorder
    Publication number: 20020187920
    Abstract: A method of inhibiting motor hyperactivity in a mammal exhibiting the symptoms of attention deficit-hyperactivity disorder (ADHD) includes administering to a mammal a dopamine D4 receptor-selective antagonist.
    Type: Application
    Filed: March 12, 2002
    Publication date: December 12, 2002
    Inventors: Ross J. Baldessarini, Kehong Zhang, Frank I. Tarazi