Patents by Inventor Hejin Cai

Hejin Cai 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).

  • In-ear headphone
    Patent number: D755759
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: May 10, 2016
    Inventor: Hejin Cai
  • Earphone
    Patent number: D829193
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: September 25, 2018
    Assignee: Guangzhou Lanshidun Electronic Limited Company
    Inventor: Hejin Cai
  • Earphone
    Patent number: D830336
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: October 9, 2018
    Assignee: Guangzhou Lanshidun Electronic Limited Company
    Inventor: Hejin Cai
  • Earphone
    Patent number: D830345
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: October 9, 2018
    Inventor: Hejin Cai
  • Earphone
    Patent number: D852171
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: June 25, 2019
    Assignee: Guangzhou Lanshidun Electronic Limited Company
    Inventor: Hejin Cai
  • Earphone
    Patent number: D853995
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: July 16, 2019
    Assignee: Guangzhou Lanshidun Electronic Limited Company
    Inventor: Hejin Cai
  • Earphone
    Patent number: D865722
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: November 5, 2019
    Assignee: GUANGZHOU LANSHIDUN ELECTRONIC LIMITED COMPANY
    Inventor: Hejin Cai
  • Earphone
    Patent number: D870710
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: December 24, 2019
    Assignee: Guangzhou Lanshidun Electronic Limited Company
    Inventor: Hejin Cai
  • Earphone
    Patent number: D872064
    Type: Grant
    Filed: August 15, 2018
    Date of Patent: January 7, 2020
    Assignee: Guangzhou Lanshidun Electronic Limited Company
    Inventor: Hejin Cai
  • Earphone
    Patent number: D872065
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: January 7, 2020
    Assignee: Guangzhou Lanshidun Electronic Limited Company
    Inventor: Hejin Cai
  • Earphone
    Patent number: D876398
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: February 25, 2020
    Assignee: Guangzhou Lanshidun Electronic Limited Company
    Inventor: Hejin Cai
  • Earphone
    Patent number: D892769
    Type: Grant
    Filed: August 15, 2018
    Date of Patent: August 11, 2020
    Assignee: GUANGZHOU LANSHIDUN ELECTRONIC LIMITED COMPANY
    Inventor: Hejin Cai
  • Earphone
    Patent number: D920959
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: June 1, 2021
    Assignee: GUANGZHOU LANSHIDUN ELECTRONIC LIMITED COMPANY
    Inventor: Hejin Cai
  • Earphone
    Patent number: D929373
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: August 31, 2021
    Assignee: GUANGZHOU LANSHIDUN ELECTRONIC LIMITED COMPANY
    Inventor: Hejin Cai
  • Earphones
    Patent number: D1020706
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: April 2, 2024
    Assignee: GUANGZHOU LANGSDON ELECTRONIC TECHNOLOGY CO., LTD
    Inventor: Hejin Cai
  • Earphone charging case
    Patent number: D1022895
    Type: Grant
    Filed: September 9, 2022
    Date of Patent: April 16, 2024
    Inventor: Hejin Cai