The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 30, 2015

Filed:

Dec. 18, 2012
Applicant:

Hitachi, Ltd., Tokyo, JP;

Inventors:

Izumi Koyanagi, Yokohama, JP;

Masafumi Kinoshita, Sagamihara, JP;

Kunihiko Toumura, Hachioji, JP;

Naoki Haraguchi, Kawasaki, JP;

Assignee:

HITACHI, LTD., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/58 (2006.01);
U.S. Cl.
CPC ...
H04L 51/06 (2013.01); H04L 51/22 (2013.01);
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.


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