Patents by Inventor Louis Yip Yuen Cheong

Louis Yip Yuen Cheong 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).

  • SWEEPABLE ELECTRIC VACUUM CLEANER
    Publication number: 20100132151
    Abstract: An electric vacuum cleaner with improved broom-like feel in sweeping includes a head and a handle. Batteries are provided in the handle and a suction motor/fan assembly, as well as a dirt cup, are provided in the head of the broom. There is a side entry of the dirt cup into the head of the unit. Pivotally mounted to the dirt cup is a filter assembly. The head of the dirt cup includes a flexible nozzle.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 3, 2010
    Inventors: DAVID KHALIL, David Matthew Collins, Suzanne Ponikvar, Greg Pajak, Louis Yip Yuen Cheong, Zhang Jian Hua, Mark Butts
  • Electric broom
    Patent number: D635774
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: April 12, 2011
    Assignee: Royal Appliance Mfg. Co.
    Inventors: Mark Butts, Dave Collins, Suzy Ponikvar, Karim Rashid, Greg Pajak, Louis Yip Yuen Cheong, Zhang Jian Hua, David Khalil