Kenji Kitagawa

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Personal digital assistant and data recovery method
- Patent number 7,631,215
- Issue date Dec 8, 2009
- Casio Hitachi Mobile Communications Co., Ltd.
- Kiyoshi Ikehara
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Personal authentication system
- Patent number 7,375,615
- Issue date May 20, 2008
- Hitachi, Ltd.
- Kenji Kitagawa
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Personal digital assistant and data recovery method
- Publication number 20060154692
- Publication date Jul 13, 2006
- Casio Hitachi Mobile Communications Co., Ltd.
- Kiyoshi Ikehara
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Data processing apparatus and ic card
- Publication number 20060117308
- Publication date Jun 1, 2006
- RENESAS TECHNOLOGY CORP.
- Kazuya Hirayanagi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Personal authentication system
- Publication number 20050278776
- Publication date Dec 15, 2005
- Kenji Kitagawa
- G06 - COMPUTING CALCULATING COUNTING