Patents by Inventor Ambrose Shing-Yin Leung

Ambrose Shing-Yin Leung 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).

  • Multi-purpose attachment tool for a hand-held vacuum cleaner
    Patent number: 6026541
    Abstract: A multi-purpose attachment tool for a hand-held vacuum cleaner combines the functionality of both a crevice tool and an extension wand in a single instrument. The multi-purpose attachment tool for a hand-held vacuum cleaner includes an insertion end adapted for friction-fit slidable mounting into the nozzle end of the hand-held vacuum cleaner, a nozzle end adapted for cleaning crevices and the like, and a self-supporting accordion-joint interconnecting the two ends. The self-supporting accordion-joint, preferably an annular bellows, is both axially extendable and bendable off-axis. When it is in its axially collapsed condition, the multi-purpose attachment tool serves as a crevice tool, but when it is axially extended, or axially extended and bent off-axis, the multi-purpose attachment tool serves as a crevice tool and/or an extension wand depending on the cleaning application.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: February 22, 2000
    Inventors: Kevin Bailey, Troy Gene Anderson, Ambrose Shing-Yin Leung, Benson Chung-Pun Leung
  • Lantern
    Patent number: D485928
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: January 27, 2004
    Assignee: The Coleman Company, Inc.
    Inventors: Ambrose Shing-Yin Leung, Benson Chung-Pun Leung
  • Lantern
    Patent number: D486933
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: February 17, 2004
    Inventors: Ambrose Shing-Yin Leung, Benson Chung-Pun Leung
  • Lantern
    Patent number: D486934
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: February 17, 2004
    Inventors: Ambrose Shing-Yin Leung, Benson Chung-Pun Leung
  • Lantern
    Patent number: D487597
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: March 16, 2004
    Assignee: The Coleman Company, Inc.
    Inventors: Ambrose Shing-Yin Leung, Benson Chung-Pun Leung
  • Lantern
    Patent number: D487809
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: March 23, 2004
    Assignee: The Coleman Company, Inc.
    Inventors: Ambrose Shing-Yin Leung, Benson Chung-Pun Leung
  • Key fob
    Patent number: D495132
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: August 31, 2004
    Assignee: The Coleman Company, Inc.
    Inventors: James Michael Cormier, Benson Chung-Pun Leung, Ambrose Shing-Yin Leung
  • Flashlight
    Patent number: D498014
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: November 2, 2004
    Assignee: The Coleman Company, Inc.
    Inventors: James Michael Cormier, Keith Vincent Skidmore, Benson Chung-Pun Leung, Ambrose Shing-Yin Leung
  • Lantern
    Patent number: D498015
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: November 2, 2004
    Inventors: Ambrose Shing-Yin Leung, Benson Chung-Pun Leung
  • Lamp
    Patent number: D498311
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: November 9, 2004
    Inventors: Benson Chung-Pun Leung, Ambrose Shing-Yin Leung
  • Vacuum cleaner
    Patent number: D435707
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: December 26, 2000
    Assignee: Amptek Company Limited
    Inventor: Ambrose Shing-Yin Leung