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:
Nov. 17, 2009
Filed:
Jun. 11, 2003
Yoshihiro Yano, Tokyo, JP;
Fukio Handa, Tokyo, JP;
Yoshihiro Yano, Tokyo, JP;
Fukio Handa, Tokyo, JP;
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Abstract
In order to give sufficient evidential admissibility to the content of a contract made online, contractual terms data C that shows a character string of contractual terms is prepared and stored by a processor on the side of a transacting party A. The data C is then transmitted to a processor on the side of a transacting party B, and is stored. A hash value ID2 of the contractual terms data C is calculated by the B-side processor, and a signature Sigof the party B is added and transmitted to the A-side processor as formal contractual proposal information. The signature Sigis verified by the A-side processor. A coincidence is verified between a hash value ID1 of the data C and the ID2 that has been transmitted. A signature Sigof the party A is added to a coinciding hash value ID, and is transmitted to the B-side processor as formal contractual acceptance information. The signature Sigis verified by the B-side processor, and a coincidence is verified between the hash value ID2 and the ID that has been transmitted.