Kouichi Hamakawa

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Patents Grantslast 30 patents

Information Patent Grant
Reading method of the two-dimensional bar code
- Patent number 7,143,948
- Issue date Dec 5, 2006
- Sanyo Electric Co., LTD
- Tsutomu Nakazawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Personal authentication system and method thereof
- Patent number 7,106,902
- Issue date Sep 12, 2006
- Sanyo Electric Co., LTD
- Tsutomu Nakazawa
- G07 - CHECKING-DEVICES
Information Patent Grant
Centralized apparatus control system for controlling a plurality of...
- Patent number 6,297,746
- Issue date Oct 2, 2001
- Sanyo Electric Co., Ltd.
- Tsutomu Nakazawa
- G08 - SIGNALLING
Information Patent Grant
Display apparatus having a look-up table for converting pixel data...
- Patent number 5,204,664
- Issue date Apr 20, 1993
- Sanyo Electric Co., Ltd.
- Kouichi Hamakawa
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
Personal authentication system and method thereof
- Publication number 20030123710
- Publication date Jul 3, 2003
- Sanyo Electric Co., Ltd.
- Tsutomu Nakazawa
- G07 - CHECKING-DEVICES
Information Patent Application
Reading method of the two-dimensional bar code
- Publication number 20030116628
- Publication date Jun 26, 2003
- SANYO ELECTRIC CO., LTD.
- Tsutomu Nakazawa
- G06 - COMPUTING CALCULATING COUNTING