Patents by Inventor Yifan Qian

Yifan Qian 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 SEPARATING AND PURIFYING POLYSACCHARIDES FROM GANODERMA SPORES
    Publication number: 20210403606
    Abstract: The present invention discloses a method for separating and purifying polysaccharides from Ganoderma spores. The method includes ultrasonically extracting defatted Ganoderma spore powder and filtering with a plate and frame filter press to obtain a filtrate, and then precipitating the filtrate by passing sequentially through ethanol with a mass concentration of 75% and ethanol with a mass concentration of 85%, and filtering, to obtain polysaccharides which have a significant inhibitory effect on transplanted tumors in animals.
    Type: Application
    Filed: December 11, 2018
    Publication date: December 30, 2021
    Inventors: Yuan GUO, Yifan QIAN, Weiwei SHI, Kewei HUA, Yunyun ZHU, Suling CHEN
  • Organic electroluminescent device having partition wall and a manufacturing method of the same by relief printing method
    Patent number: 7485023
    Abstract: A method of manufacturing an organic electroluminescent device is disclosed. The method includes forming a first electrode or a substrate; forming a partition wall adjacent to the first electrode; and forming an organic luminous layer on the first electrode by relief printing method.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: February 3, 2009
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Koji Takeshita, Takahisa Shimizu, Hironori Kawakami, Yifan Qian
  • Organic electroluminescent device and a manufacturing method of an organic electroluminescent device
    Publication number: 20060220537
    Abstract: A method of manufacturing an organic electroluminescent device is disclosed. The method comprises forming a first electrode or a substrate; forming a partition wall adjacent to the first electrode; and forming an organic luminous layer on the first electrode by relief printing method.
    Type: Application
    Filed: March 28, 2006
    Publication date: October 5, 2006
    Inventors: Koji Takeshita, Takahisa Shimizu, Hironori Kawakami, Yifan Qian
  • Circuit board for organic electroluminescent panel, method of manufacture, and electroluminescent panel
    Patent number: 6339288
    Abstract: A substrate for an organic electroluminescence display element comprises a support (11), a plurality of first electrode lines (12) arranged apart from each other on the support (11), and a plurality of partition walls (13) arranged apart from each other and extending in a direction to cross the first electrode lines (12). Each of the partition walls (13) has eaves in an upper portion and flared side surfaces in a lower portion.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: January 15, 2002
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Yifan Qian, Mamoru Ishizaki, Takeshi Itoi, Mizuhiro Tani, Takao Minato, Yuichi Ito, Teruhiko Kai