Patents by Inventor Chongchao Zhao

Chongchao Zhao 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).

  • Slide rule style flight computer
    Patent number: 11763104
    Abstract: This invention relates to a slide rule style flight computer. The front disc and the back disc are connected and fixed by positioning clips. The front disc includes a front base disc and a front rotary disc. The front rotary disc is rotatably fixed on the front base disc. The front disc includes a front base disc and a front rotary disc. The front rotary disc is rotatably fixed on the front base disc.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: September 19, 2023
    Assignee: Cya Aviation Tech Ltd
    Inventor: Chongchao Zhao
  • Slide Rule Style Flight Computer
    Publication number: 20200283164
    Abstract: This invention relates to a slide rule style flight computer. The front disc and the back disc are connected and fixed by positioning clips. The front disc includes a front base disc and a front rotary disc. The front rotary disc is rotatably fixed on the front base disc. The front disc includes a front base disc and a front rotary disc. The front rotary disc is rotatably fixed on the front base disc.
    Type: Application
    Filed: February 20, 2020
    Publication date: September 10, 2020
    Inventor: Chongchao Zhao
  • Hot iron ruler
    Patent number: D899951
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: October 27, 2020
    Assignee: SHANGHAI KEARING STATIONERY CO., LTD.
    Inventor: Chongchao Zhao
  • Hot iron ruler
    Patent number: D899952
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: October 27, 2020
    Assignee: SHANGHAI KEARING STATIONERY CO., LTD.
    Inventor: Chongchao Zhao
  • Ruler
    Patent number: D987453
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: May 30, 2023
    Assignee: Kearing Ltd.
    Inventor: Chongchao Zhao
  • Ruler
    Patent number: D987454
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: May 30, 2023
    Assignee: Kearing Ltd.
    Inventor: Chongchao Zhao