Patents by Inventor Zhukai Zhang

Zhukai 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).

  • Coat hook
    Patent number: D564243
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: March 18, 2008
    Assignee: Liberty Hardware Mfg. Corp.
    Inventor: Zhukai Zhang
  • Pull
    Patent number: D564335
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: March 18, 2008
    Assignee: Liberty Hardware Mfg. Corp.
    Inventor: Zhukai Zhang
  • Pull
    Patent number: D568142
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: May 6, 2008
    Assignee: Liberty Hardware Mfg. Corp.
    Inventors: Zhukai Zhang, James Daniels
  • Sash lock
    Patent number: D569223
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: May 20, 2008
    Inventor: Zhukai Zhang
  • Door stop
    Patent number: D570678
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: June 10, 2008
    Assignee: Liberty Hardware Mfg. Corp.
    Inventor: Zhukai Zhang
  • Door stop
    Patent number: D571652
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: June 24, 2008
    Assignee: Liberty Hardware Mfg. Corp.
    Inventor: Zhukai Zhang
  • Handrail bracket
    Patent number: D572575
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: July 8, 2008
    Assignee: Liberty Hardware Mfg. Corp.
    Inventor: Zhukai Zhang
  • Double hook
    Patent number: D574224
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: August 5, 2008
    Assignee: Liberty Hardware Mfg. Corp.
    Inventor: Zhukai Zhang
  • Towel bar
    Patent number: D574652
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: August 12, 2008
    Assignee: Liberty Hardware Mfg. Corp.
    Inventor: Zhukai Zhang
  • Sash lock
    Patent number: D578865
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: October 21, 2008
    Assignee: Liberty Hardware Mfg. Corp.
    Inventor: Zhukai Zhang
  • Door stop
    Patent number: D586650
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: February 17, 2009
    Assignee: Liberty Hardware Mfg. Corp.
    Inventor: Zhukai Zhang
  • Hook
    Patent number: D589331
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: March 31, 2009
    Assignee: Liberty Hardware Mfg. Corp.
    Inventor: Zhukai Zhang
  • Knob
    Patent number: D597818
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: August 11, 2009
    Assignee: Liberty Hardware Mfg. Corp.
    Inventor: Zhukai Zhang
  • Wall plate
    Patent number: D668932
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: October 16, 2012
    Assignee: Liberty Hardware Mfg. Corp.
    Inventor: Zhukai Zhang