Patents by Inventor Kei Inaba

Kei Inaba 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).

  • Communications system and communications method
    Patent number: 10305685
    Abstract: An identification information transmitter encrypts identification information for identifying a person or an object using an encryption key, transmits the encrypted identification information, and, after receiving another encryption key, switches the encryption key from the encryption key to the other encryption key. A server receives the encrypted identification information from the identification information transmitter, determines whether the encryption key is to be switched, and, if the encryption key is to be switched, generates the other encryption key. Another server authenticates the identification information that an identification information receiver receives from the identification information transmitter, and, if authentication is successful, acquires the other encryption key from the server, and transmits the other encryption key to the identification information receiver.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: May 28, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tsutomu Kawase, Masahiko Itoh, Fumihiko Itoh, Tadanori Ryu, Kei Inaba
  • COMMUNICATIONS SYSTEM AND COMMUNICATIONS METHOD
    Publication number: 20170099135
    Abstract: An identification information transmitter encrypts identification information for identifying a person or an object using an encryption key, transmits the encrypted identification information, and, after receiving another encryption key, switches the encryption key from the encryption key to the other encryption key. A server receives the encrypted identification information from the identification information transmitter, determines whether the encryption key is to be switched, and, if the encryption key is to be switched, generates the other encryption key. Another server authenticates the identification information that an identification information receiver receives from the identification information transmitter, and, if authentication is successful, acquires the other encryption key from the server, and transmits the other encryption key to the identification information receiver.
    Type: Application
    Filed: July 19, 2016
    Publication date: April 6, 2017
    Inventors: Tsutomu KAWASE, Masahiko Itoh, Fumihiko Itoh, Tadanori Ryu, Kei Inaba