Patents by Inventor Chieko Funabe

Chieko Funabe 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).

  • Encryption apparatus for enabling encryption and non-encryption terminals to be connected on the same network
    Patent number: 6016350
    Abstract: An encryption apparatus enables encrypted communications using existing network equipment which does not have an encryption function, such as a server, a client, or a router. The encryption apparatus is connected to a section between a terminal and a network, data from the terminal is encrypted and sent to the network, data from the network is decrypted and sent to the terminal, and a connection control frame between the terminal and the network is not encrypted.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: January 18, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Chieko Funabe, Yoshimasa Baba, Shoichiro Seno, Yuuji Koui