Patents by Inventor Chuanlong MA

Chuanlong MA 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: 20240122496
    Abstract: Provided are a method and device for measuring a respiratory rate, an electronic device, and a readable medium, which belong to the technical field of respiratory rate monitoring. The method for measuring a respiratory rate includes: acquiring a PPG signal; performing a preprocess on the PPG signal; acquiring PPG interval data and a PPG interval variation valve according to a pretreated PPG signal, wherein the PPG interval variation value refers to a difference between two adjacent PPG intervals in the PPG interval data; when there is no the abnormal PPG interval variation value in PPG interval data, calculating the respiratory rate according to the PPG interval data; and when there is the abnormal PPG interval variation value in PPG interval data, correcting the PPG interval data, and calculating the respiratory rate according to corrected PPG interval data. Therefore, the accuracy of measurement of a PPG interval variation can be improved, thereby reducing a measurement error of the respiratory rate.
    Type: Application
    Filed: November 26, 2021
    Publication date: April 18, 2024
    Inventors: Chuanlong MA, Qiaoyan CHEN
  • Publication number: 20220315428
    Abstract: The present disclosure relates to a method for manufacturing graphene based on a mixed inorganic acid solvent. By using the inorganic acid solvent with simple preparation and low-cost instead of expensive organic solvent to perform a solvent stripping method for manufacturing graphene products, it may avoid the problems of high toxicity and harsh preparation conditions caused by using organic solvents, reduce the requirement on temperature in the graphene preparation process of the solvent stripping method, and reduce the time required by graphene stripping treatment; thereby simplifying the preparation process, and facilitating the commercialization and large-scale development of the method for manufacturing graphene by the solvent stripping method.
    Type: Application
    Filed: July 16, 2020
    Publication date: October 6, 2022
    Inventors: Xiaolun QIAN, Chuanlong MA
  • Patent number: D982759
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: April 4, 2023
    Inventors: Xiaolun Qian, Chuanlong Ma, Zesheng Xi
  • Patent number: D1006231
    Type: Grant
    Filed: February 3, 2023
    Date of Patent: November 28, 2023
    Assignee: BEIJING CHOICE ELECTRONIC TECHNOLOGY CO., LTD
    Inventors: Xiaolun Qian, Chuanlong Ma, Zesheng Xi
  • Patent number: D1031047
    Type: Grant
    Filed: April 24, 2023
    Date of Patent: June 11, 2024
    Inventors: Xiaolun Qian, Chuanlong Ma, Yang Zhao, Zesheng Xi
  • Patent number: D1055284
    Type: Grant
    Filed: September 27, 2023
    Date of Patent: December 24, 2024
    Inventors: Chuanlong Ma, Zesheng Xi