Patents by Inventor Ju-Ching Chen-Chi

Ju-Ching Chen-Chi 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).

  • Fasteners with improved retaining effect
    Patent number: 6676352
    Abstract: A fastener includes a main body having a number of spaced ridges formed on an outer periphery thereof. The ridges are arranged along a helix. At least one of the ridges has a retainer extending in a direction that is at an angle with an extending direction of the ridge. In another embodiment, a fastener includes a main body having a number of spaced ridges formed on an outer periphery thereof. Each ridge extends along a direction that is parallel to a longitudinal direction of the main body. At least one of the ridges has a retainer extending in a direction that is at an angle with an extending direction of the ridge.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: January 13, 2004
    Inventors: Ju-Ching Chen-Chi, Li-Hsin Yeh
  • Fasteners with improved retaining effect
    Publication number: 20020131843
    Abstract: A fastener comprises a main body having a number of spaced ridges formed on an outer periphery thereof. The ridges are arranged along a helix. At least one of the ridges has a retainer extending in a direction that is at an angle with an extending direction of the ridge. In another embodiment, a fastener comprises a main body having a number of spaced ridges formed on an outer periphery thereof. Each ridge extends along a direction that is parallel to a longitudinal direction of the main body. At least one of the ridges has a retainer extending in a direction that is at an angle with an extending direction of the ridge.
    Type: Application
    Filed: March 13, 2001
    Publication date: September 19, 2002
    Inventors: Ju-Ching Chen-Chi, Li-Hsin Yeh