Patents by Inventor Henry C. Chu

Henry C. Chu 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).

  • Dual head interdental toothbrush
    Patent number: 7444709
    Abstract: An interdental toothbrush device includes a handle having one or more wires and fixed filaments disposed on each end, and a gage disposed on an outer end portion of the wires and having an outer diameter equal to or smaller than that of the filaments for limiting and guiding the wires and the filaments to engage into the predetermined or suitable or selected interdental spaces between the teeth of the user and for preventing the filaments from being inserted and engaged into the interdental spaces having a relatively smaller width and thus for preventing the user's gum from being hurt or injured by the greater filaments.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: November 4, 2008
    Inventor: Henry C. Chu
  • Interdental toothbrush
    Patent number: 7441300
    Abstract: An interdental toothbrush includes one or more wires having fixed filaments disposed on the wires, and a gage disposed on one end portion of the wires and having an outer diameter equal to or smaller than that of the filaments for limiting and guiding the wires and the filaments to engage into the predetermined or suitable or selected interdental spaces between the teeth of the user and for preventing the filaments from being inserted and engaged into the interdental spaces having a relatively smaller width and thus for preventing the user's gum from being hurt or injured by the greater filaments.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: October 28, 2008
    Inventor: Henry C. Chu
  • Reciprocating interdental toothbrush
    Patent number: 7441297
    Abstract: A motorized interdental toothbrush includes one or more wires having fixed filaments, and a gage disposed on one end portion of the wires and having an outer diameter equal to or smaller than that of the filaments for limiting the wires and the filaments to engage into the selected interdental spaces between the teeth of the user and for preventing the filaments from being inserted and engaged into the interdental spaces having a relatively smaller width and for preventing the user's gum from being injured by the greater filaments, and a moving device may be coupled to move and drive the brush device to move back and forth or in a reciprocating action and to clean the interdental space.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: October 28, 2008
    Inventor: Henry C. Chu
  • Motorized interdental toothbrush
    Patent number: 7441296
    Abstract: A motorized interdental toothbrush includes one or more wires having fixed filaments, and a gage disposed on one end portion of the wires and having an outer diameter equal to or smaller than that of the filaments for limiting the wires and the filaments to engage into the selected interdental spaces between the teeth of the user and for preventing the filaments from being inserted and engaged into the interdental spaces having a relatively smaller width and for preventing the user's gum from being injured by the greater filaments, and a rotating device may be coupled to rotate and drive the brush device to clean the interdental space.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: October 28, 2008
    Inventor: Henry C. Chu
  • Cleaning facility for tubing system of vehicle
    Patent number: 7431039
    Abstract: A cleaning facility for cleaning tubing systems includes a reservoir having a chamber to receive flush fluid, a pipe coupling the reservoir to the tubing systems, to allow the flush fluid to flow from the reservoir into the tubing systems to flush the tubing systems. A tank includes a space to receive the flush fluid from the tubing systems, and to collect the flush fluid. A filter is coupled to the tank, to filter the flush fluid and to allow only gas to flow out of the tank. A conduit is coupled to the reservoir, to supply pressurized air to pump the flush fluid from the reservoir to the tubing systems to flush and to clean the tubing systems.
    Type: Grant
    Filed: July 27, 2004
    Date of Patent: October 7, 2008
    Inventor: Henry C. Chu
  • Motorized interdental toothbrush
    Publication number: 20080216265
    Abstract: A motorized interdental toothbrush includes one or more wires having fixed filaments, and a gage disposed on one end portion of the wires and having an outer diameter equal to or smaller than that of the filaments for limiting the wires and the filaments to engage into the selected interdental spaces between the teeth of the user and for preventing the filaments from being inserted and engaged into the interdental spaces having a relatively smaller width and for preventing the user's gum from being injured by the greater filaments, and a rotating device may be coupled to rotate and drive the brush device to clean the interdental space.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 11, 2008
    Inventor: Henry C. Chu
  • Reciprocating interdental toothbrush
    Publication number: 20080216267
    Abstract: A motorized interdental toothbrush includes one or more wires having fixed filaments, and a gage disposed on one end portion of the wires and having an outer diameter equals to or smaller than that of the filaments for limiting the wires and the filaments to engage into the selected interdental spaces between the teeth of the user and for preventing the filaments from being inserted and engaged into the interdental spaces having a relatively smaller width and for preventing the user's gum from being injured by the greater filaments, and a moving device may be coupled to move and drive the brush device to move back and forth or in a reciprocating action and to clean the interdental space.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 11, 2008
    Inventor: Henry C. Chu
  • Interdental toothbrush
    Publication number: 20080216266
    Abstract: An interdental toothbrush includes one or more wires having fixed filaments disposed on the wires, and a gage disposed on one end portion of the wires and having an outer diameter equal to or smaller than that of the filaments for limiting and guiding the wires and the filaments to engage into the predetermined or suitable or selected interdental spaces between the teeth of the user and for preventing the filaments from being inserted and engaged into the interdental spaces having a relatively smaller width and thus for preventing the user's gum from being hurt or injured by the greater filaments.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 11, 2008
    Inventor: Henry C. Chu
  • Cap for air compressor
    Patent number: D574854
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: August 12, 2008
    Inventor: Henry C. Chu
  • Cap for air compressor
    Patent number: D574855
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: August 12, 2008
    Inventor: Henry C. Chu
  • Cylinder housing for air compressor
    Patent number: D574856
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: August 12, 2008
    Inventor: Henry C. Chu
  • Cylinder housing for air compressor
    Patent number: D574857
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: August 12, 2008
    Inventor: Henry C. Chu
  • Cap for air compressor
    Patent number: D575306
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: August 19, 2008
    Inventor: Henry C. Chu
  • Cap for air compressor
    Patent number: D575307
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: August 19, 2008
    Inventor: Henry C. Chu
  • Cap for air compressor
    Patent number: D575802
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: August 26, 2008
    Inventor: Henry C. Chu
  • Cylinder housing for air compressor
    Patent number: D583392
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: December 23, 2008
    Inventor: Henry C. Chu
  • Pressure sensing device for air compressor
    Patent number: D588483
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: March 17, 2009
    Inventor: Henry C. Chu
  • Coupling bracket for air compressor
    Patent number: D589061
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: March 24, 2009
    Inventor: Henry C. Chu
  • Cylinder housing for air compressor
    Patent number: D589063
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: March 24, 2009
    Inventor: Henry C. Chu
  • Cap for air compressor
    Patent number: D589064
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: March 24, 2009
    Inventor: Henry C. Chu