Patents by Inventor Hidetaka Sugawara

Hidetaka Sugawara 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).

  • E-mail system, control method for e-mail system, relay device, program, and information storage medium
    Patent number: 9338120
    Abstract: To provide an e-mail system for ensuring that a user is able to know content of an e-mail sent addressed to the user even when the e-mail is not delivered to the user. An e-mail sending unit (220) sends an e-mail sent addressed to the alternative mail address of the user to the actual mail address of the user, after setting a predetermined destination as a destination of a notice of failed delivery, if caused, of the e-mail. In a case where the notice of failed delivery of the e-mail sent addressed to the actual mail address of the user is received by the predetermined destination, an undelivered mail data saving unit (230) saves undelivered mail data indicating the undelivered e-mail in an undelivered mail data storage unit (410). An undelivered mail data sending unit (110) sends undelivered mail data indicating an e-mail sent addressed to the actual mail address of the user and failed to be delivered to a terminal device used by the user.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: May 10, 2016
    Assignee: Rakuten, Inc.
    Inventors: Naohiro Yanase, Hidetaka Sugawara, Akihiro Kato, Ryohei Shimada
  • E-MAIL SYSTEM, CONTROL METHOD FOR E-MAIL SYSTEM, RELAY DEVICE, PROGRAM, AND INFORMATION STORAGE MEDIUM
    Publication number: 20140052805
    Abstract: To provide an e-mail system for ensuring that a user is able to know content of an e-mail sent addressed to the user even when the e-mail is not delivered to the user. An e-mail sending unit (220) sends an e-mail sent addressed to the alternative mail address of the user to the actual mail address of the user, after setting a predetermined destination as a destination of a notice of failed delivery, if caused, of the e-mail. In a case where the notice of failed delivery of the e-mail sent addressed to the actual mail address of the user is received by the predetermined destination, an undelivered mail data saving unit (230) saves undelivered mail data indicating the undelivered e-mail in an undelivered mail data storage unit (410). An undelivered mail data sending unit (110) sends undelivered mail data indicating an e-mail sent addressed to the actual mail address of the user and failed to be delivered to a terminal device used by the user.
    Type: Application
    Filed: February 3, 2012
    Publication date: February 20, 2014
    Applicant: RAKUTEN, INC.
    Inventors: Naohiro Yanase, Hidetaka Sugawara, Akihiro Kato, Ryohei Shimada