Katsuyuki Kanetsuna

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Contents reproduction expiration management system, contents reprod...
- Patent number 8,249,991
- Issue date Aug 21, 2012
- Sony Corporation
- Takashi Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
Communication system, communication apparatus, communication method...
- Patent number 8,090,764
- Issue date Jan 3, 2012
- Sony Corporation
- Takashi Sato
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Communication system, communication apparatus, communication method...
- Publication number 20070185977
- Publication date Aug 9, 2007
- SONY CORPORATION
- Takashi Sato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Content playback expiation management system, content playback expi...
- Publication number 20060185023
- Publication date Aug 17, 2006
- SONY CORPORATION
- Takashi Sato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Communication system, communication apparatus, communication method...
- Publication number 20030041123
- Publication date Feb 27, 2003
- Takashi Sato
- G06 - COMPUTING CALCULATING COUNTING