Patents Assigned to Ding Hwa Co., Ltd.
  • Patent number: 9897085
    Abstract: An improved pump control device includes a control device that controls power supplied to a pump, a working device that is connected to the pump to control fluid to flow, and a detection device for detecting the working device. The detection device, when detecting the working device is making a specific operation, transmits operation information to the control device to change the operation condition of the pump so as to achieve advantages of easy use, power saving, and cost reduction.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: February 20, 2018
    Assignee: DING HWA CO., LTD.
    Inventor: Kwang-Tsan Chen
  • Patent number: 7152813
    Abstract: A cap with a suction type spray head includes an air guiding chamber, an intake passage, an outgoing passage, a liquid sucking mouth and an air pressure balancing aperture for a container with a sprayer. The liquid in the container can be sucked out due to air pressure difference between the sucking mouth and the interior of the container. The outgoing passage at the outer end thereof is a spraying outlet, which face the liquid sucking mouth so that the liquid out of the liquid sucking mouth is atomized with the air sprayed from the spraying outlet.
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: December 26, 2006
    Assignee: Ding Hwa Co., Ltd.
    Inventor: Kwang-Tsan Chen
  • Patent number: D533879
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: December 19, 2006
    Assignee: Ding Hwa Co., Ltd.
    Inventor: Kwang-Tsan Chen
  • Patent number: D533880
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: December 19, 2006
    Assignee: Ding Hwa Co., Ltd.
    Inventor: Kwang-Tsan Chen
  • Patent number: D552806
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: October 9, 2007
    Assignee: Ding Hwa Co., Ltd.
    Inventor: Kwang-Tsan Chen
  • Patent number: D498483
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: November 16, 2004
    Assignee: Ding Hwa Co., Ltd.
    Inventor: Kwang-Tsan Chen
  • Patent number: D622290
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: August 24, 2010
    Assignee: Ding Hwa Co., Ltd.
    Inventor: Kwang-Tsan Chen
  • Patent number: D644297
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: August 30, 2011
    Assignee: Ding HWA Co., Ltd.
    Inventor: Kwang-Tsan Chen
  • Patent number: D705818
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: May 27, 2014
    Assignee: Ding Hwa Co., Ltd.
    Inventor: Kwang-Tsan Chen