Akihiko Hirano

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for recognizing a rotated image pattern with redu...
- Patent number 6,226,417
- Issue date May 1, 2001
- Ricoh Company, Ltd.
- Hideaki Yamagata
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Image extraction method and apparatus and image recognition method...
- Patent number 6,181,820
- Issue date Jan 30, 2001
- Ricoh Company Ltd.
- Michiyoshi Tachikawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Image extraction method and apparatus, and image recognition method...
- Patent number 6,115,495
- Issue date Sep 5, 2000
- Ricoh Company, Ltd.
- Michiyoshi Tachikawa
- G06 - COMPUTING CALCULATING COUNTING