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:
Mar. 21, 2006
Filed:
May. 13, 1996
Makoto Yoshioka, Kanagawa, JP;
Haruhiko Tsunoda, Kanagawa, JP;
Kazuharu Hasegawa, Kanagawa, JP;
Hidefumi Aoe, Kanagawa, JP;
Makoto Yoshioka, Kanagawa, JP;
Haruhiko Tsunoda, Kanagawa, JP;
Kazuharu Hasegawa, Kanagawa, JP;
Hidefumi Aoe, Kanagawa, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A CD-ROM is recorded with a CD-ROM effective period and an effective period of a content stored in the CD-ROM. A CD-ROM effective period judging section of a personal computer reads the effective periods, compares these periods with a machine date generated by a machine date generating section and enables a purchase slip transmitting section to transmit a purchase slip only when the machine data falls within the effective periods. A CD-ROM effective period judging section of a center compares the present date with the CD-ROM effective period and the content effective period registered on a goods master, reads the key from the goods master and transmits the key to the personal computer only when both of a CD-ROM number and a content ID written onto the received purchase slip fall within the effective periods.