Patents Assigned to Perfect Union Co., Ltd.
  • Rotation speed controller for fans
    Patent number: 7450356
    Abstract: A specially designed rotation speed controller for fans, in addition to basic components like variable resistor, the controller has also been equipped with special components such as TRIAC, micro limit switch, and glass tube fuse, which allows said controller to precisely control the on/off status and the rotation speed of the fan, and the controller also provides power-off protection against power overload.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: November 11, 2008
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching
  • Ceramic electric heater
    Patent number: D532880
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: November 28, 2006
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching
  • Electric heater
    Patent number: D532881
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: November 28, 2006
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching
  • Electric heater
    Patent number: D532884
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: November 28, 2006
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching
  • MP3 player
    Patent number: D538297
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: March 13, 2007
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching
  • Ceramic electric heater
    Patent number: D538415
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: March 13, 2007
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching
  • Electric heater
    Patent number: D545950
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: July 3, 2007
    Assignee: Perfect Union Co., Ltd.
    Inventors: Chan Ching, Chad Ricker
  • Electric heater
    Patent number: D545952
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: July 3, 2007
    Assignee: Perfect Union Co., Ltd.
    Inventors: Chan Ching, Chad Ricker
  • Electric heater
    Patent number: D546429
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: July 10, 2007
    Assignee: Perfect Union Co., Ltd.
    Inventors: Chan Ching, Chad Ricker
  • Electric heater
    Patent number: D546430
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: July 10, 2007
    Assignee: Perfect Union Co., Ltd.
    Inventors: Chan Ching, Chad Ricker
  • Electric heater
    Patent number: D557779
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: December 18, 2007
    Assignee: Perfect Union Co., Ltd.
    Inventors: Chan Ching, Chad Ricker
  • Multimedia speaker
    Patent number: D561174
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: February 5, 2008
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching
  • Multimedia speaker set
    Patent number: D565029
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: March 25, 2008
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching
  • Multimedia speaker
    Patent number: D566690
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: April 15, 2008
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching
  • Electric heater
    Patent number: D567347
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: April 22, 2008
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching
  • Air filter
    Patent number: D612036
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: March 16, 2010
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching
  • Electric heater
    Patent number: D616080
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: May 18, 2010
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching
  • Chargeable fan
    Patent number: D617440
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: June 8, 2010
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching
  • Electric heater
    Patent number: D652903
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: January 24, 2012
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching
  • Multimedia speaker
    Patent number: D671095
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: November 20, 2012
    Assignee: Perfect Union Co., Ltd.
    Inventor: Chan Ching