Patents by Inventor Sen-Jun Tsai

Sen-Jun Tsai 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: 7341293
    Abstract: A chopstick comprises an upper body having a penetrating receiving chamber; an upper inner side of the receiving chamber being formed with an annular groove; a lower end of the upper body having two through holes; a lower body having an insertion section at an upper end thereof; a wall surface of the insertion section having a receiving chamber; one end of the receiving chamber having a through hole; a ball, a spring, and a retaining block being sequentially installed in the receiving chamber; the ball being protruded into the through hole; the retaining block being retained in the receiving chamber; and the spring and ball are positioned in the receiving chamber. A clamping unit is attached to the upper body. The clamping unit has two holes for receiving a pair of chopsticks. A lower end of the lower body has a brush; and the brush has brush hairs.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: March 11, 2008
    Inventor: Sen-Jun Tsai
  • Publication number: 20070216176
    Abstract: A chopstick comprises an upper body having a penetrating receiving chamber; an upper inner side of the receiving chamber being formed with an annular groove; a lower end of the upper body having two through holes; a lower body having an insertion section at an upper end thereof; a wall surface of the insertion section having a receiving chamber; one end of the receiving chamber having a through hole; a ball, a spring, and a retaining block being sequentially installed in the receiving chamber; the ball being protruded into the through hole; the retaining block being retained in the receiving chamber; and the spring and ball are positioned in the receiving chamber. A clamping unit is attached to the upper body. The clamping unit has two holes for receiving a pair of chopsticks. A lower end of the lower body has a brush; and the brush has brush hairs.
    Type: Application
    Filed: March 20, 2006
    Publication date: September 20, 2007
    Inventor: Sen-Jun Tsai
  • Patent number: 7234745
    Abstract: A pair of chopsticks includes two elongate bodies facing each other, and a connector pivotally connected with and between the two elongate bodies. The elongate bodies respectively have a hollow near an upper end. The connector has a plate spring, which has one end pivotally connected to the hollow of each elongate body. Thus the connector connects the two elongate bodies together so that the lower end sections of the two elongate bodies may be closed by pushing the two bodies inward to each other for picking up food, and opened by letting loose a hand clamping the two bodies for next round of picking up food.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: June 26, 2007
    Inventor: Sen-Jun Tsai