Etsuko Fujisawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Pen-shaped handwriting input apparatus using accelerometers and gyr...
- Patent number 6,229,102
- Issue date May 8, 2001
- Ricoh Company, Ltd.
- Yasuhiro Sato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Pen-shaped handwriting input apparatus using accelerometers and gyr...
- Patent number 6,084,577
- Issue date Jul 4, 2000
- Ricoh Company, Ltd.
- Yasuhiro Sato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Pen-shaped handwriting input apparatus using accelerometers and gyr...
- Patent number 5,981,884
- Issue date Nov 9, 1999
- Ricoh Company, Ltd.
- Yasuhiro Sato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Pen-shaped handwriting input apparatus using accelerometers and gyr...
- Patent number 5,902,968
- Issue date May 11, 1999
- Ricoh Company, Ltd.
- Yasuhiro Sato
- G06 - COMPUTING CALCULATING COUNTING