Patent Document ID: 6014672
Application ID: 08912367

Base Claim:
1. An information retrieval system, comprising: a history storage apparatus for storing retrieval histories each having information including a group of retrieval items, a retrieval term comprised of at least one keyword, and a retrieval result; a history storage device for storing, when retrieval of documents is performed by a first person, a retrieval history regarding said retrieval into said history storage apparatus; an input device for inputting at least one of said retrieval terms by said first person and at least one of said group of retrieval items and said retrieval terms by a second person; a history retrieval device for retrieving from within said retrieval storage apparatus, a group of retrieval histories which satisfy a designation of an inputted retrieval item, said group of retrieval histories having a keyword of said retrieval term similar to an inputted keyword of said retrieval term; a similar term retrieval device for sequencing said group of retrieval histories detected by said history retrieval device based on a similarity of retrieval terms and presenting said sequenced group of retrieval histories; and a retrieval device for retrieving documents utilizing retrieval terms of a retrieval history designated by a retrieving person from within said group of retrieval histories presented by said similar term retrieval device.

---

Claim 7:
7. An information retrieval system as claimed in claim 1, wherein each of said retrieval histories includes information indicative of a history number, a retrieval time, a retrieving person, a terminal, a retrieval term and a retrieval result.