Patents by Inventor Wan-Chen Lee

Wan-Chen Lee 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).

  • Ball-shaped caster assembly
    Publication number: 20040181907
    Abstract: A ball-shaped caster assembly includes a wheel seat, and a wheel body rotatably mounted on the wheel seat. The wheel body includes a roller having two opposite sides, and two covers each mounted on a respective one of the two opposite sides of the roller. The roller and each of the two covers have an outer surface formed with a thin shell wall. Thus, the wheel body will not be deformed and can maintain its circularity during fabrication, so that the wheel body can be rolled smoothly and conveniently without incurring jump.
    Type: Application
    Filed: March 17, 2003
    Publication date: September 23, 2004
    Inventor: Wan-Chen Lee
  • Armrest device
    Publication number: 20020195861
    Abstract: An armrest device has an armrest frame and a cover plate. The armrest frame has a narrow rear portion and a narrow bottom portion. The cover plate encloses the narrow rear portion and the narrow bottom portion of the armrest frame. A plurality of positioning holes are formed on the narrow rear portion and the narrow bottom portion of the armrest frame. A plurality of washers are inserted in the positioning holes of the armrest frame. The cover plate has a plurality of hollow sockets inserted in the positioning holes of the armrest frame. A plurality of bolts are inserted through the hollow sockets and the positioning holes of the armrest frame.
    Type: Application
    Filed: June 25, 2001
    Publication date: December 26, 2002
    Inventor: Wan-Chen Lee
  • Armrest
    Patent number: D503057
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: March 22, 2005
    Inventor: Wan-Chen Lee
  • Chair armrest
    Patent number: D439773
    Type: Grant
    Filed: June 22, 2000
    Date of Patent: April 3, 2001
    Assignee: U-Chin Furniture Co., Ltd.
    Inventor: Wan-Chen Lee
  • Chair armrest
    Patent number: D440084
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: April 10, 2001
    Assignee: U-Chin Furniture Co., Ltd.
    Inventor: Wan-Chen Lee
  • Chair armrest
    Patent number: D447367
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: September 4, 2001
    Assignee: U-Chin Furniture So., Ltd.
    Inventor: Wan-Chen Lee
  • Chair armrest
    Patent number: D447368
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: September 4, 2001
    Assignee: U-Chin Furniture Co., Ltd.
    Inventor: Wan-Chen Lee
  • Chair armrest
    Patent number: D453430
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: February 12, 2002
    Assignee: U-Chin Furniture Co., Ltd.
    Inventor: Wan-Chen Lee
  • Chair armrest
    Patent number: D458061
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: June 4, 2002
    Inventor: Wan-Chen Lee
  • Chair armrest
    Patent number: D458477
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: June 11, 2002
    Inventor: Wan-Chen Lee
  • Chair armrest
    Patent number: D458478
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: June 11, 2002
    Inventor: Wan-Chen Lee
  • Chair armrest
    Patent number: D458778
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: June 18, 2002
    Inventor: Wan-Chen Lee
  • Chair armrest
    Patent number: D458779
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: June 18, 2002
    Inventor: Wan-Chen Lee
  • Chair armrest
    Patent number: D459922
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: July 9, 2002
    Inventor: Wan-Chen Lee
  • Chair armrest
    Patent number: D461076
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: August 6, 2002
    Inventor: Wan-Chen Lee
  • Chair armrest
    Patent number: D461077
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: August 6, 2002
    Inventor: Wan-Chen Lee
  • Chair leg
    Patent number: D467452
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: December 24, 2002
    Inventor: Wan-Chen Lee
  • Armrest
    Patent number: D476513
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: July 1, 2003
    Inventor: Wan-Chen Lee
  • Chair caster
    Patent number: D484397
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: December 30, 2003
    Inventor: Wan-Chen Lee
  • Chair armrest
    Patent number: D488652
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: April 20, 2004
    Inventor: Wan-Chen Lee