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.
Patent No.:
Date of Patent:
Jul. 19, 2011
Filed:
Dec. 23, 2008
Makoto Iwayama, Tokorozawa, JP;
Osamu Imaichi, Koganei, JP;
Tomohiro Yasuda, Kokubunji, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In document search for searching a document by use of a query formula composed of a Boolean formula of keywords, a plurality of query formulas arriving at about the same time from a plurality of users are efficiently processed. A system or a program for searching documents includes: a query formula controller for sorting a plurality of query formulas into a plurality of query formula sets based on predicted search speeds of the respective query formulas; and a search unit for searches for the plurality of sorted query formula sets sequentially from the set having the fastest predicted search speed, and for, in each search processing, merging the query formulas in the corresponding query formula set into a formula and thereby searching from the merged formula.