Patents by Inventor Izumi Koyanagi

Izumi Koyanagi 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).

  • Data storing method used for data store server in mailing system
    Patent number: 9071563
    Abstract: A method in which a mail server for receiving mails manages sequence management information that records the sequence of mails stored in a data store server and the times at which a mail server sends the mails to a destination server, wherein the sequence management information is so managed as to satisfy the two conditions: one is to make not greater than a predetermined number the number of entries in any one of respective pieces of the divided sequence management information resulted by dividing the sequence management information into a plurality of pieces, each entry being included in each divided sequence management information piece and defined as a combination of key having the mail body of a certain mail as its value, and the time at which the certain mail is sent to the destination server.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: June 30, 2015
    Assignee: HITACHI, LTD.
    Inventors: Izumi Koyanagi, Masafumi Kinoshita, Kunihiko Toumura, Naoki Haraguchi
  • DATA STORING METHOD USED FOR DATA STORE SERVER IN MAILING SYSTEM
    Publication number: 20130246541
    Abstract: A method in which a mail server for receiving mails manages sequence management information that records the sequence of mails stored in a data store server and the times at which a mail server sends the mails to a destination server, wherein the sequence management information is so managed as to satisfy the two conditions: one is to make not greater than a predetermined number the number of entries in any one of respective pieces of the divided sequence management information resulted by dividing the sequence management information into a plurality of pieces, each entry being included in each divided sequence management information piece and defined as a combination of key having the mail body of a certain mail as its value, and the time at which the certain mail is sent to the destination server.
    Type: Application
    Filed: December 18, 2012
    Publication date: September 19, 2013
    Applicant: HITACHI, LTD.
    Inventors: Izumi KOYANAGI, Masafumi KINOSHITA, Kunihiko TOUMURA, Naoki HARAGUCHI
  • Facsimile apparatus and program rewriting method
    Patent number: 6583889
    Abstract: At the time of rewriting a program provided in a facsimile apparatus using a memory card, a mode is changed by determining the content of the memory card and the presence and absence of a predetermined operation. Then, at the time of rewriting the program, the program is rewritten to a program stored in the memory card regardless of old and new versions, while the content of the memory card is erased as required.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: June 24, 2003
    Assignee: Panasonic Communications Co., Ltd.
    Inventors: Izumi Koyanagi, Nobuhiro Moteki, Suguru Tsuchiya, Shinichi Mitaku, Takafumi Higuchi