Patents by Inventor Yimin Yan

Yimin Yan 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).

  • Publication number: 20240251066
    Abstract: Imaging method and imaging device. The imaging method includes: obtaining an original image of a current shooting scene; identifying a result of identification of the current shooting scene based on a color temperature data, wherein the result of identification includes in an underwater scene or not in an underwater scene, and the color temperature data is obtained by a color temperature sensor on the current shooting scene; and performing a white balance process on the original image based on the result of identification to obtain a processed image of the current shooting scene.
    Type: Application
    Filed: April 5, 2024
    Publication date: July 25, 2024
    Applicant: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Yimin YAN, Shouqian HAN
  • Patent number: 9163058
    Abstract: A method as well as new intermediates for preparing Ulipristal acetate (a compound I) and a method for preparing the new intermediates are provided. The intermediate in a constitutional formula IV is conductive to reacting with methyl lithium or methyl Grignard reagent, a protective group is easy to be removed after a reaction, side reactions are few, a mid-term treatment is simple, the reagents used are cheap, costs are low and a yield is high, if a compound in a constitutional formula V is obtained by the reaction of a compound in a constitutional formula III and the intermediate in the constitutional formula IV, the yield of a two-step reaction is 75%, a purity is above 98%. wherein R is defined in the specification.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: October 20, 2015
    Assignees: Utopharm (Shanghai) Co., Ltd, Changzhou No. 4 Pharmaceutical Factory Co., Ltd
    Inventors: Junzhi Luo, Yongqiang Sun, Xun Luo, Yimin Yan, Zhaojun Wang, Mingxia Qian, Yongrui Tu
  • Publication number: 20140296510
    Abstract: A method as well as new intermediates for preparing Ulipristal acetate (a compound I) and a method for preparing the new intermediates are provided. The intermediate in a constitutional formula IV is conductive to reacting with methyl lithium or methyl Grignard reagent, a protective group is easy to be removed after a reaction, side reactions are few, a mid-term treatment is simple, the reagents used are cheap, costs are low and a yield is high, if a compound in a constitutional formula V is obtained by the reaction of a compound in a constitutional formula III and the intermediate in the constitutional formula IV, the yield of a two-step reaction is 75%, a purity is above 98%. wherein R is defined in the specification.
    Type: Application
    Filed: July 12, 2012
    Publication date: October 2, 2014
    Applicants: Changzhou Siyao Pharm Co., Ltd., Utopharm (Shanghai) Co., Ltd.
    Inventors: Junzhi Luo, Yongqiang Sun, Xun Luo, Yimin Yan, Zhaojun Wang, Mingxia Qian, Yongrui Tu
  • Patent number: D938340
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: December 14, 2021
    Inventor: Yimin Yan