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:
Jun. 26, 2001
Filed:
May. 20, 1998
Seiichi Susaki, Yokohama, JP;
Yasuhiko Mizuno, Sakura, JP;
Miwa Takahashi, Kawasaki, JP;
Satoshi Mitsunaga, Kawasaki, JP;
Shoji Moriyama, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Certification and authentication services (electronic information signing and archiving services) are given when electronic commerce is carried out in an open network such as Internet. A system has a service supplying unit and service receiving units which are connected to one another through a communication network. In the system, the service supplying unit transmits contract information including a content of a contract to the service receiving units of the service receivers. Each of the service receiving units having received the contract information prepares one party-signed contract information in which the contract information is digitally signed by the service receiver and transmits the one party-signed contract information to the service supplying unit. The service supplying unit receives the one party-signed contract information transmitted from each of the service receiving units, synthesizes a plurality of received copies of one party-signed contract information into a single document, prepares contract information signed by the service supplier in which the document is digitally signed by the service supplier, and archives the prepared service supplier-signed contract information and transmits such contract information to each of the service receiving units.