Chihiro Kawahara

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Patents Grantslast 30 patents

Information Patent Grant
Multi-media information record device, and a multi-media informatio...
- Patent number RE39652
- Issue date May 22, 2007
- Matsushita Electric Industrial Co., Ltd.
- Masahiro Oashi
- 715 - Data processing: presentation processing of document, operator interfac...
Information Patent Grant
Data conversion apparatus for reading a document for a display scre...
- Patent number 5,983,247
- Issue date Nov 9, 1999
- Matsushita Electric Industrial Co., Ltd.
- Kiyokazu Yamanaka
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Data conversion apparatus for data communication system
- Patent number 5,930,808
- Issue date Jul 27, 1999
- Matsushita Electric Industrial Co., Ltd.
- Kiyokazu Yamanaka
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Multi-media information record device, and a multi-media informatio...
- Patent number 5,767,845
- Issue date Jun 16, 1998
- Matsushita Electric Industrial Co.
- Masahiro Oashi
- G11 - INFORMATION STORAGE