Patents by Inventor Gau Chen

Gau Chen 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).

  • Hand stamp with removable die box
    Patent number: 10513134
    Abstract: A hand stamp that has a handle that receives a removable die box. The die box is received and held in the handle by a spring-loaded push button that has a locking mechanism that engages a locking slot in the die box. By operating the push button the locking mechanism is moved out of the locking slot to release the die box for re-inking or replacement of the porous foam material with a replacement image surface. A reversible cover engages the bottom of the handle to securely cover the die plate in a first position. When the cover is reversed, the cover acts as a protective resting place for the stamp which can be easily lifted off the cover for use by the operator.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: December 24, 2019
    Assignee: Shanghai Jipushen Office Articles Co., Ltd.
    Inventor: Gau Chen
  • Hand Stamp with Removable Die Box
    Publication number: 20190381818
    Abstract: A hand stamp that has a handle that receives a removable die box. The die box is received and held in the handle by a spring-loaded push button that has a locking mechanism that engages a locking slot in the die box. By operating the push button the locking mechanism is moved out of the locking slot to release the die box for re-inking or replacement of the porous foam material with a replacement image surface. A reversible cover engages the bottom of the handle to securely cover the die plate in a first position. When the cover is reversed, the cover acts as a protective resting place for the stamp which can be easily lifted off the cover for use by the operator.
    Type: Application
    Filed: June 14, 2018
    Publication date: December 19, 2019
    Inventor: Gau Chen
  • Dust cover for hand stamp
    Patent number: D877239
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: March 3, 2020
    Assignee: Shanghai Jipushen Office Articles Co. Ltd.
    Inventor: Gau Chen