Patents by Inventor Minoru Ohwada

Minoru Ohwada 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).

  • Contents reproducing apparatus, content distribution server, and content distribution system
    Publication number: 20030142827
    Abstract: A contents reproducing unit which receives a reproduction permission authenticating key from a contents downloading server 1 and encrypts encrypted musical data recorded in a CD-ROM 21 by using the reproduction permission authenticating key.
    Type: Application
    Filed: January 13, 2003
    Publication date: July 31, 2003
    Inventors: Minoru Ohwada, Yasutaka Urakawa