Koji Manabe

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Digital video and audio data encryption, decryption and system auth...
- Patent number 6,940,977
- Issue date Sep 6, 2005
- NEC Corporation
- Koji Manabe
- G11 - INFORMATION STORAGE
Information Patent Grant
Data communications system and data communications method
- Patent number 6,721,895
- Issue date Apr 13, 2004
- NEC Corporation
- Koji Manabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Ultra-directional speaker
- Patent number 6,678,381
- Issue date Jan 13, 2004
- NEC Corporation
- Koji Manabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Super-directional loudspeaker using ultrasonic wave
- Patent number 6,556,687
- Issue date Apr 29, 2003
- NEC Corporation
- Koji Manabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image data encoding system and image inputting apparatus
- Patent number 6,424,726
- Issue date Jul 23, 2002
- NEC Corporation
- Hirotaka Nakano
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Image data encoding system and image inputting apparatus
- Patent number 6,298,142
- Issue date Oct 2, 2001
- NEC Corporation
- Hirotaka Nakano
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Contents data supplying system capable of protecting copyright of c...
- Publication number 20020073319
- Publication date Jun 13, 2002
- NEC Corporation
- Koji Manabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Image data encoding system and image inputting apparatus
- Publication number 20010046308
- Publication date Nov 29, 2001
- Hirotaka Nakano
- G06 - COMPUTING CALCULATING COUNTING