Yoshifumi Natsuyama

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Yamato-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Frame and image display device
- Patent number 6,977,694
- Issue date Dec 20, 2005
- International Business Machines Corporation
- Yoshifumi Natsuyama
- G02 - OPTICS
Information Patent Grant
Display element frame for a portable device
- Patent number 6,724,445
- Issue date Apr 20, 2004
- International Business Machines Corporation
- Yoshifumi Natsuyama
- G02 - OPTICS
Information Patent Grant
Input pen for touch panel, and input pen
- Patent number 6,710,267
- Issue date Mar 23, 2004
- International Business Machines Corporation
- Yoshifumi Natsuyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Panel light source device
- Patent number 6,498,631
- Issue date Dec 24, 2002
- International Business Machines Corporation
- Yoshifumi Natsuyama
- G02 - OPTICS
Information Patent Grant
Portable information processing apparatus with hinge for enlarged L...
- Patent number 5,636,102
- Issue date Jun 3, 1997
- International Business Machines Corporation
- Takane Fujino
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Frame and image display device
- Publication number 20020063812
- Publication date May 30, 2002
- Yoshifumi Natsuyama
- G02 - OPTICS
Information Patent Application
Panel light source device
- Publication number 20020008806
- Publication date Jan 24, 2002
- IBM
- Yoshifumi Natsuyama
- G02 - OPTICS
Information Patent Application
Liquid crystal display device and a method thereof
- Publication number 20010048492
- Publication date Dec 6, 2001
- IBM
- Yoshifumi Natsuyama
- G02 - OPTICS
Information Patent Application
Input pen for touch panel, and input pen
- Publication number 20010028345
- Publication date Oct 11, 2001
- International Business Machines Corporation
- Yoshifumi Natsuyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Display element frame for a portable device
- Publication number 20010026334
- Publication date Oct 4, 2001
- Yoshifumi Natsuyama
- G02 - OPTICS