Patents by Inventor Taketoshi Tanaka

Taketoshi Tanaka 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).

  • SEMICONDUCTOR LIGHT EMITTING DEVICE
    Publication number: 20090095973
    Abstract: A semiconductor light emitting device has a device body made of a group III nitride semiconductor having a major surface defined by a nonpolar plane. In the device body, a contact portion with an n-type electrode includes a crystal plane different from the major surface. For example, the contact portion may include a corrugated surface. More specifically, the contact portion may include a region having a plurality of protrusions parallel to a polar plane formed in a striped manner.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 16, 2009
    Applicant: ROHM CO., LTD.
    Inventors: Taketoshi TANAKA, Kuniyoshi Okamoto