Patents by Inventor Dainel Chang

Dainel Chang 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: 6452555
    Abstract: A multi-frequency helix antenna with a helical column having its diameter, material, pitch of circles as well as the total length thereof preset, the top end of the helix antenna has a radially extending section bent inwardly along the central axis of the helical column itself, a predetermined length is bent integrally from the end of the radially extending section orthogonally to extend inwardly along the central axis of the helical column of said helix antenna itself, the antenna is endued with an alternative waving frequency value and the value of the capacity and inductance of the antenna match with each other to give the antenna an equivalent resistance to thereby form a complete harmonic oscillation.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: September 17, 2002
    Assignee: Auden Techno Corp.
    Inventors: Dainel Chang, Chiang Chi-Ming
  • Publication number: 20020097192
    Abstract: A multi-frequency helix antenna with a helical column having its diameter, material, pitch of circles as well as the total length thereof preset, the top end of the helix antenna has a radially extending section bent inwardly along the central axis of the helical column itself, a predetermined length is bent integrally from the end of the radially extending section orthogonally to extend inwardly along the central axis of the helical column of said helix antenna itself, the antenna is endued with an alternative waving frequency value and the value of the capacity and inductance of the antenna match with each other to give the antenna an equivalent resistance to thereby form a complete harmonic oscillation.
    Type: Application
    Filed: January 24, 2001
    Publication date: July 25, 2002
    Applicant: Auden Technology Mfg. Co., LTD.
    Inventors: Dainel Chang, Chiang Chi-Ming