Patents by Inventor Chi Han Cheng

Chi Han Cheng 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).

  • Sprinkler
    Patent number: D576253
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: September 2, 2008
    Assignee: Yuan Mei Corp.
    Inventor: Chi Han Cheng
  • Sprinkler handle
    Patent number: D584380
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: January 6, 2009
    Assignee: Yuan Mei Corp.
    Inventor: Chi Han Cheng
  • Sprinkler handle
    Patent number: D584795
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: January 13, 2009
    Assignee: Yuan Met Corp.
    Inventor: Chi Han Cheng
  • Sprinkler handle
    Patent number: D584796
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: January 13, 2009
    Assignee: Yuan Mei Corp.
    Inventor: Chi Han Cheng
  • Sprinkler handle
    Patent number: D585108
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: January 20, 2009
    Assignee: Yuan Mei Corp.
    Inventor: Chi Han Cheng
  • Sprinkler handle
    Patent number: D585109
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: January 20, 2009
    Assignee: Yuan Mei Corp.
    Inventor: Chi Han Cheng
  • Sprinkler handle
    Patent number: D585958
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: February 3, 2009
    Assignee: Yuan Mei Corp.
    Inventor: Chi Han Cheng
  • Sprinkler base
    Patent number: D599882
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: September 8, 2009
    Assignee: Yuan Mei Corp.
    Inventor: Chi Han Cheng
  • Sprinkler handle
    Patent number: D604389
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: November 17, 2009
    Assignee: Yuan Mei Corp.
    Inventor: Chi Han Cheng
  • Sprinkler handle
    Patent number: D604390
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: November 17, 2009
    Assignee: Yuan Mei Corp.
    Inventor: Chi Han Cheng
  • Water spray gun
    Patent number: D614729
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: April 27, 2010
    Inventor: Chi-Han Cheng
  • Water spray gun
    Patent number: D614730
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: April 27, 2010
    Inventor: Chi-Han Cheng
  • Sprinkler
    Patent number: D615153
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 4, 2010
    Inventor: Chi-Han Cheng
  • Sprinkler
    Patent number: D615154
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 4, 2010
    Inventor: Chi-Han Cheng
  • Water spray gun
    Patent number: D615155
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 4, 2010
    Inventor: Chi-Han Cheng
  • Water spray gun
    Patent number: D615156
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 4, 2010
    Inventor: Chi-Han Cheng
  • Sprinkler
    Patent number: D615610
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 11, 2010
    Inventor: Chi-Han Cheng
  • Sprinkler
    Patent number: D615611
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 11, 2010
    Inventor: Chi-Han Cheng
  • Sprinkler
    Patent number: D615612
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 11, 2010
    Inventor: Chi-Han Cheng
  • Water spray gun
    Patent number: D615615
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 11, 2010
    Inventor: Chi-Han Cheng