Patents by Inventor Ka Shing Wu

Ka Shing Wu 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).

  • Patent number: 9020972
    Abstract: A system and method of the subject technology automatically constructs a database instruction from a template instruction, including one or more variable tokens, and one or more document object representations, each including an object type and a user-generated parameter. The one or more variable tokens in the template instruction are substituted by the user-generated parameter of a corresponding document object representation when the type of a respective variable token is matched to the type of the corresponding document object representation.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: April 28, 2015
    Assignee: Google Inc.
    Inventors: Mark Zhenguo Gaun, Karthik M. Nagaraj, Sam Ka-Shing Wu, Ying Wang
  • Patent number: 8177966
    Abstract: A liquid storage and dispensing device with a filter for removing minerals and a UV light source for killing pathogens existing in a liquid. A liquid is introduced into the device via the inlet. The liquid passes through the filter into a collector. The filtered liquid flows from the collector through a thru passage into a UV chamber. The UV light source emits UV rays through a UV transmissive wall into the interior portion of the UV chamber. Exposure to the UV light kills pathogens present in the filtered liquid. Substantially purified liquid can then be dispensed from an outlet.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: May 15, 2012
    Assignee: Mr. Chiaphua Industries Limited
    Inventor: Ka Shing Wu
  • Patent number: 8128820
    Abstract: A liquid storage and dispensing device with a filter for removing minerals and a UV light source for killing pathogens existing in a liquid. A liquid is introduced into the device via the inlet. The liquid passes through the filter into a collector. The filtered liquid flows from the collector through a passage into a UV chamber. The UV light source emits UV rays through a UV transmissive wall into the interior portion of the UV chamber. Exposure to the UV light kills pathogens present in the filtered liquid. Substantially purified liquid can then be dispensed from an outlet.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: March 6, 2012
    Assignee: Mr. Chiaphua Industries Limited
    Inventor: Ka Shing Wu
  • Publication number: 20110084006
    Abstract: A liquid storage and dispensing device with a filter for removing minerals and a UV light source for killing pathogens existing in a liquid. A liquid is introduced into the device via the inlet. The liquid passes through the filter into a collector. The filtered liquid flows from the collector through a thru passage into a UV chamber. The UV light source emits UV rays through a UV transmissive wall into the interior portion of the UV chamber. Exposure to the UV light kills pathogens present in the filtered liquid. Substantially purified liquid can then be dispensed from an outlet.
    Type: Application
    Filed: December 21, 2010
    Publication date: April 14, 2011
    Inventor: Ka Shing Wu
  • Publication number: 20100215552
    Abstract: A liquid storage and dispensing device with a filter for removing minerals and a UV light source for killing pathogens existing in a liquid. A liquid is introduced into the device via the inlet. The liquid passes through the filter into a collector. The filtered liquid flows from the collector through a passage into a UV chamber. The UV light source emits UV rays through a UV transmissive wall into the interior portion of the UV chamber. Exposure to the UV light kills pathogens present in the filtered liquid. Substantially purified liquid can then be dispensed from an outlet.
    Type: Application
    Filed: February 25, 2009
    Publication date: August 26, 2010
    Inventor: Ka Shing Wu
  • Publication number: 20030074751
    Abstract: An electric toothbrush includes a brush head to which there is pivotally mounted a main bristle holder. Extending from the brush head is an auxiliary bristle holder which can oscillate in unison with the main bristle holder or in contra-rotational unison with the main bristle holder to increase efficiency of the toothbrush in operation.
    Type: Application
    Filed: October 23, 2001
    Publication date: April 24, 2003
    Inventor: Ka Shing Wu
  • Patent number: 6453498
    Abstract: An electric toothbrush has a housing incorporating a motor with a drive shaft rotatable about a longitudinal axis A. A shank extends beyond the housing and is integrally formed with a brush head at its remote end. The shank is pivotably supported intermediate its length in an end wall of the housing. An eccentric cam mounted to the shaft cooperates with a cup on a near end of the shank to form a mechanical coupling. When the shaft rotates both the near end and the brush head moves through a circular path.
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: September 24, 2002
    Assignee: Addway Engineering Limited
    Inventor: Ka Shing Wu
  • Patent number: 6182321
    Abstract: A toothbrush has a handle provided with a rigid curve wire axle at one end. A hollow shank and toothbrush head rotatable and snugly fit to the axle. In the configuration shown bristles on the head are concave. The bristle formation can be made convex by rotating the shank on the axle by 180°.
    Type: Grant
    Filed: November 11, 1999
    Date of Patent: February 6, 2001
    Assignee: Addway Engineering Ltd.
    Inventor: Ka Shing Wu
  • Patent number: 6047429
    Abstract: An electric toothbrush includes a drive shaft that is reciprocated by a motor in a brush handle (not shown). The reciprocating movement is directly transferred to a piston that serves to pump water from a reservoir via a water passage to a water jet nozzle in the midst of brushes.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: April 11, 2000
    Assignee: Addway Engineering Limited
    Inventor: Ka Shing Wu
  • Patent number: 5931170
    Abstract: A dental flosser has a bushing with a lateral pin that engages in a spiral groove in a sleeve that surrounds the bushing. The bushing is driven backwards and forwards by a shaft and this causes a flosser element base anchor to be rotated clockwise and counterclockwise, and moved backwards and forwards at the same time during use.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: August 3, 1999
    Assignee: Addway Engineering Limited
    Inventor: Ka Shing Wu