INFORMATION PROCESSOR, INFORMATION PROCESSING METHOD AND PROGRAM

PROBLEM TO BE SOLVED: To solve the problem that it is extremely difficult to create any appropriate retrieval formula in a conventional information processor.SOLUTION: An information processor is provided with: a term storage unit 315 in which a term included in technical document information and patent classification code information about the technical document information are stored so as to be associated with each other for every technical document information; a keyword information acquisition unit 302 for acquiring keyword information; a patent classification code information retrieval unit 303 for, by using the keyword information acquired by the keyword information acquisition unit 302 as a retrieval key, retrieving patent classification code information corresponding to the term matched with the retrieval key from the term storage unit 315; a patent retrieval formula information generation unit 304 for generating patent retrieval formula information showing the retrieval formula of a patent official gazette and including at least a portion of the retrieved patent classification code information; and a patent retrieval formula information output unit 305 for outputting the generated patent retrieval formula information.