Tatsuro Arai

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Tokyo, JP

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Patents Applicationslast 30 patents

Information Patent Application
License and privilege management method in digital contents sale
- Publication number 20050044049
- Publication date Feb 24, 2005
- Nobuya Okayama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Digital contents watching method and its system
- Publication number 20020165987
- Publication date Nov 7, 2002
- Hitachi, Ltd
- Takeshi Arisaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and method for managing a coupon
- Publication number 20020111864
- Publication date Aug 15, 2002
- Hitachi, Ltd
- Hiromi Ukai
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
System and method for managing a coupon
- Publication number 20020077907
- Publication date Jun 20, 2002
- Hiromi Ukai
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Method and system for calculating licensing fee of digital contents...
- Publication number 20020077989
- Publication date Jun 20, 2002
- Nobuya Okayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Electronic book system and its contents display method
- Publication number 20010007980
- Publication date Jul 12, 2001
- Atsushi Ishibashi
- G06 - COMPUTING CALCULATING COUNTING