Patents by Inventor Yun-ja Choi

Yun-ja Choi 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).

  • Sports shoe
    Patent number: 6742288
    Abstract: Disclosed is a sports shoe having a shell 26, an inner sole 10, a middle sole 16, and sponges 12 and 14 attached between the inner sole 10 and the middle sole 16, including: a space part 17 formed within the middle sole 16; a first metallic rod 18a and a polyvinyl chloride (PVC) pipe 20 constantly spaced apart each other and inserted into the space part 17; and a second metallic rod 18b being detachably inserted into the PVC pipe 20.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: June 1, 2004
    Inventor: Yun-ja Choi
  • Sports shoe
    Publication number: 20040035025
    Abstract: Disclosed is a sports shoe having a shell 26, an inner sole 10, a middle sole 16, and sponges 12 and 14 attached between the inner sole 10 and the middle sole 16, including: a space part 17 formed within the middle sole 16; a first metallic rod 18a and a polyvinyl chloride (PVC) pipe 20 constantly spaced apart each other and inserted into the space part 17; and a second metallic rod 18b being detachably inserted into the PVC pipe 20.
    Type: Application
    Filed: August 20, 2002
    Publication date: February 26, 2004
    Inventor: Yun-Ja Choi