Patents by Inventor Charlie Tu

Charlie Tu 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: 5205407
    Abstract: A case for receiving paper clips, pins or the like includes a pan having a bottom, a peripheral wall extending upwardly from the bottom and an open top. An upper cover covers the open top and is rotatably mounted to the pan. The pan and the upper cover define a receiving space for receiving the paper clips, pins or the like. The upper cover includes a top wall having an eccentric opening and a shoveling portion integral with the top wall and extending from a portion of a periphery of the opening toward the bottom of the pan in a circumferential direction. The paper clips, the pins or the like are shoveled into the shoveling portion when the upper cover is rotated relative to the pan in a first direction. The paper clips, the pins or the like are put into the receiving space through the opening when the upper cover is rotated relative to the pan in a second direction opposite to the first direction.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: April 27, 1993
    Assignee: C&T Products Corp.
    Inventor: Charlie Tu
  • Patent number: D470529
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: February 18, 2003
    Inventor: Charlie Tu
  • Patent number: D321905
    Type: Grant
    Filed: May 18, 1989
    Date of Patent: November 26, 1991
    Inventor: Charlie Tu
  • Patent number: D323189
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: January 14, 1992
    Assignee: Chuang Tao Corporation
    Inventor: Charlie Tu
  • Patent number: D325395
    Type: Grant
    Filed: June 5, 1990
    Date of Patent: April 14, 1992
    Assignee: Chuang Tao Corporation
    Inventor: Charlie Tu
  • Patent number: D328309
    Type: Grant
    Filed: March 6, 1990
    Date of Patent: July 28, 1992
    Assignee: Chuang Tao Corporation
    Inventor: Charlie Tu
  • Patent number: D328922
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: August 25, 1992
    Assignee: Chuang Tao Corporation
    Inventor: Charlie Tu
  • Patent number: D328923
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: August 25, 1992
    Assignee: Chuang Tao Corporation
    Inventor: Charlie Tu
  • Patent number: D329255
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: September 8, 1992
    Assignee: Chuang Tao Corporation
    Inventor: Charlie Tu
  • Patent number: D329873
    Type: Grant
    Filed: October 18, 1990
    Date of Patent: September 29, 1992
    Assignee: Chuang Tao Corporation
    Inventor: Charlie Tu
  • Patent number: D330911
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: November 10, 1992
    Assignee: Chuang Tao Corporation
    Inventor: Charlie Tu