Patents by Inventor Takao Awata

Takao Awata 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).

  • Measurement data management and authentication method and measurement data management and authentication system
    Patent number: 8701209
    Abstract: Remote meter reading terminal devices 2 generate electronic signature data based on meter reading information that includes a measured value acquired by electricity meters 3, measurement date and time, and an electricity meter ID, and transmit the generated electronic signature data and the meter reading information to a meter reading data management server 1. When the verification of the electronic signature data received from the remote meter reading terminal devices 2 has succeeded, the meter reading data management server 1 generates a hash value of the meter reading information and transmits the generated hash value to a TSA server 4. The meter reading data management server 1 also acquires a time stamp generated by the TSA server 4 and stores therein meter reading data that includes the time stamp, the meter reading information, the electronic signature data and the hash value.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: April 15, 2014
    Assignee: Kei Communication Technology Inc.
    Inventor: Takao Awata
  • MEASUREMENT DATA MANAGEMENT METHOD AND MEASUREMENT DATA MANAGEMENT SYSTEM
    Publication number: 20130014287
    Abstract: Remote meter reading terminal devices 2 generate electronic signature data based on meter reading information that includes a measured value acquired by electricity meters 3, measurement date and time, and an electricity meter ID, and transmit the generated electronic signature data and the meter reading information to a meter reading data management server 1. When the verification of the electronic signature data received from the remote meter reading terminal devices 2 has succeeded, the meter reading data management server 1 generates a hash value of the meter reading information and transmits the generated hash value to a TSA server 4. The meter reading data management server 1 also acquires a time stamp generated by the TSA server 4 and stores therein meter reading data that includes the time stamp, the meter reading information, the electronic signature data and the hash value.
    Type: Application
    Filed: March 14, 2011
    Publication date: January 10, 2013
    Applicant: Kei Communication Technology Inc.
    Inventor: Takao Awata