Patents by Inventor Qinjun ZHANG

Qinjun 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 non-destructive detection of egg freshness based on centroid measurement
    Patent number: 11262341
    Abstract: A method for non-destructive detection of egg freshness based on centroid measurement. A real-time distance between the centroid position of an egg and the top of a small end of the egg is measured, the ratio of the distance to the length of the egg is defined as a centroid ratio, models are respectively established regarding a centroid ratio change and the number of days the egg has been stored, and regarding the centroid ratio change and the egg freshness, and the number of the days the egg has been stored and the egg freshness are predicted by means of the established models.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: March 1, 2022
    Assignee: Northwest Agriculture and Forestry University
    Inventors: Xiang Duan, Wen Tan, Xuebo Liu, Ying Lan, Qinjun Zhang, Lu Yang
  • METHOD FOR NON-DESTRUCTIVE DETECTION OF EGG FRESHNESS BASED ON CENTROID MEASUREMENT
    Publication number: 20210389292
    Abstract: A method for non-destructive detection of egg freshness based on centroid measurement. A real-time distance between the centroid position of an egg and the top of a small end of the egg is measured, the ratio of the distance to the length of the egg is defined as a centroid ratio, models are respectively established regarding a centroid ratio change and the number of days the egg has been stored, and regarding the centroid ratio change and the egg freshness, and the number of the days the egg has been stored and the egg freshness are predicted by means of the established models.
    Type: Application
    Filed: September 6, 2019
    Publication date: December 16, 2021
    Applicant: Northwest Agriculture and Forestry University
    Inventors: Xiang DUAN, Wen TAN, Xuebo LIU, Ying LAN, Qinjun ZHANG, Lu YANG