Patents Assigned to Nationalpak Limited
  • Hinge structure and packaging box with it
    Patent number: 11788333
    Abstract: The application provides a hinge structure comprising a first connecting piece provided with a slot and a second connecting piece provided with a rotating shaft. An inner wall of the slot is provided with a limiting slot and an outer surface of the rotating shaft is convex to form a clipping strip; the clipping strip is inserted into the limiting slot to limit a relative rotation angle between the first connecting piece and the second connecting piece. The present application also provides a packaging box comprising the above hinge structure. The hinge structure and the packing box are provided with a limiting slot in the slot and a clipping strip on the rotating shaft. Through the cooperation between the clipping strip and the limiting slot, the relative rotation angle between the first connecting piece and the second connecting piece is fixed and the reliability of the hinge structure is improved.
    Type: Grant
    Filed: January 29, 2022
    Date of Patent: October 17, 2023
    Assignee: Nationalpak Limited
    Inventor: Ka Fai Kinsen Au
  • Jewelry display box
    Patent number: D510021
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: September 27, 2005
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Hand-held display box
    Patent number: D510022
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: September 27, 2005
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Watch display box with multi watch winders
    Patent number: D510210
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: October 4, 2005
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Jewelry display box
    Patent number: D510700
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: October 18, 2005
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Jewelry display box
    Patent number: D513176
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: December 27, 2005
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Watch display box with single watch winder
    Patent number: D513568
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: January 17, 2006
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Sliding door watch display box with multi watch winders
    Patent number: D513569
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: January 17, 2006
    Assignee: NationalPak Limited
    Inventor: Kinsen Ka Fai Au
  • Watch display box with double watch winders
    Patent number: D514848
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: February 14, 2006
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Jewelry display box
    Patent number: D515413
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: February 21, 2006
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Hand-held jewelry display box
    Patent number: D515414
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: February 21, 2006
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Hand-held display box
    Patent number: D531022
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: October 31, 2006
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Sliding door watch display box with single watch winder
    Patent number: D543054
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: May 22, 2007
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Octangle watch display box with multi watch winders
    Patent number: D543055
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: May 22, 2007
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Optical case
    Patent number: D544205
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: June 12, 2007
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Optical case
    Patent number: D544712
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: June 19, 2007
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Optical case
    Patent number: D547548
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: July 31, 2007
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Sail shaped jewelry display box
    Patent number: D551071
    Type: Grant
    Filed: August 3, 2005
    Date of Patent: September 18, 2007
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Optical case
    Patent number: D551450
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: September 25, 2007
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au
  • Palace shaped watch display box with single watch winder
    Patent number: D556227
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: November 27, 2007
    Assignee: Nationalpak Limited
    Inventor: Kinsen Ka Fai Au