Mayumi Ueyama

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording/reproducing apparatus for searching programs rec...
- Patent number 7,231,130
- Issue date Jun 12, 2007
- Hitachi, Ltd.
- Shoji Ohno
- G11 - INFORMATION STORAGE
Information Patent Grant
Electronic book distributing system by use of purchase certificate...
- Patent number 6,895,393
- Issue date May 17, 2005
- Hitachi, Ltd.
- Toru Numata
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Magnetic recording/reproducing apparatus for searching programs rec...
- Patent number 6,389,217
- Issue date May 14, 2002
- Hitachi, Ltd.
- Shoji Ohno
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording/reproducing apparatus for search programs record...
- Patent number 6,038,366
- Issue date Mar 14, 2000
- Hitachi, Ltd.
- Shoji Ohno
- G11 - INFORMATION STORAGE
Information Patent Grant
magnetic recording/reproducing apparatus for searching programs rec...
- Patent number 5,761,371
- Issue date Jun 2, 1998
- Hitachi, Ltd.
- Shoji Ohno
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Magnetic recording/reproducing apparatus for searching programs rec...
- Publication number 20020094192
- Publication date Jul 18, 2002
- Shoji Ohno
- G11 - INFORMATION STORAGE