Patents by Inventor Enmin Zhang

Enmin 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).

  • Writing instrument
    Patent number: D762774
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 2, 2016
    Assignee: Riteline LLC
    Inventor: Enmin Zhang
  • Writing instrument
    Patent number: D762775
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 2, 2016
    Assignee: Riteline LLC
    Inventor: Enmin Zhang
  • Writing instrument
    Patent number: D763354
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 9, 2016
    Assignee: Riteline LLC
    Inventor: Enmin Zhang
  • Writing instrument
    Patent number: D763960
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 16, 2016
    Assignee: Riteline LLC
    Inventor: Enmin Zhang
  • Writing instrument
    Patent number: D763961
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 16, 2016
    Assignee: Riteline LLC
    Inventor: Enmin Zhang
  • Writing instrument
    Patent number: D763962
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 16, 2016
    Assignee: Riteline LLC
    Inventor: Enmin Zhang
  • Writing instrument
    Patent number: D763963
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 16, 2016
    Assignee: Riteline LLC
    Inventor: Enmin Zhang
  • Writing instrument
    Patent number: D767034
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: September 20, 2016
    Assignee: Riteline LLC
    Inventor: Enmin Zhang
  • Writing instrument
    Patent number: D839959
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: February 5, 2019
    Assignee: Riteline LLC
    Inventor: Enmin Zhang
  • Writing instrument
    Patent number: D839960
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: February 5, 2019
    Assignee: Riteline LLC
    Inventor: Enmin Zhang