Kazuharu Hasegawa

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Content sales period verifying system and content decryption key ef...
- Patent number 7,016,878
- Issue date Mar 21, 2006
- Fujitsu Limited
- Makoto Yoshioka
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Content sales price accounting system and accounting method thereof
- Patent number 5,918,215
- Issue date Jun 29, 1999
- Fujitsu Limited
- Makoto Yoshioka
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
System for and method of distributing proceeds from contents
- Patent number 5,884,280
- Issue date Mar 16, 1999
- Fujitsu Limited
- Makoto Yoshioka
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
CONTENT SALES PERIOD VERIFYING SYSTEM AND CONTENT DECRYPTION KEY EF...
- Publication number 20050071272
- Publication date Mar 31, 2005
- MAKOTO YOSHIOKA
- G06 - COMPUTING CALCULATING COUNTING