Koichi Hayasaka

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
System for sending, converting, and adding advertisements to electr...
- Patent number 6,622,174
- Issue date Sep 16, 2003
- Sony Corporation
- Yoshitaka Ukita
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Information provision system, information regeneration terminal, an...
- Patent number 6,600,930
- Issue date Jul 29, 2003
- Sony Corporation
- Hiroshi Sakurai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Mobile communication device with a rotary push switch
- Patent number 6,192,258
- Issue date Feb 20, 2001
- Access Co., Ltd.
- Tomihisa Kamada
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Information search and display apparatus
- Patent number 5,802,536
- Issue date Sep 1, 1998
- Sony Corporation
- Fumihiko Yoshii
- G06 - COMPUTING CALCULATING COUNTING