Patents by Inventor Changzheng Lin

Changzheng Lin 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).

  • Water pipe with elastic band
    Patent number: D923157
    Type: Grant
    Filed: October 26, 2020
    Date of Patent: June 22, 2021
    Assignee: Zhejiang Haochuan Rubber and Plastic Co., Ltd.
    Inventor: Changzheng Lin
  • Water pipe valve
    Patent number: D947998
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: April 5, 2022
    Assignee: Zhejiang Haochuan Rubber and Plastic Co., Ltd.
    Inventor: Changzheng Lin
  • Water pipe quick connector
    Patent number: D952805
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: May 24, 2022
    Inventor: Changzheng Lin
  • Water pipe sprinkler
    Patent number: D956178
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: June 28, 2022
    Assignee: Zhejiang Haochuan Rubber and Plastic Co., Ltd.
    Inventor: Changzheng Lin
  • Toilet dredge
    Patent number: D1013299
    Type: Grant
    Filed: November 21, 2021
    Date of Patent: January 30, 2024
    Inventor: Changzheng Lin