Keiichi Totsuka

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Display device securing mechanism and display system that rotates d...
- Patent number 8,102,333
- Issue date Jan 24, 2012
- Sony Corporation
- Tetsujiro Kondo
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
System and method for information supply and apparatuses therefor
- Patent number 8,074,242
- Issue date Dec 6, 2011
- Sony Corporation
- Toshimichi Nagashima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Information supply apparatus, information utilization apparatus, in...
- Patent number 7,225,457
- Issue date May 29, 2007
- Sony Corporation
- Toshimichi Nagashima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Authentication information communication system and method, portabl...
- Patent number 7,202,773
- Issue date Apr 10, 2007
- Sony Corporation
- Haruo Oba
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Portable audio listening apparatus
- Patent number 7,181,024
- Issue date Feb 20, 2007
- Sony Corporation
- Haruo Oba
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Information supply apparatus, information utilization apparatus, in...
- Publication number 20070174870
- Publication date Jul 26, 2007
- Toshimichi Nagashima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Display device and method, recording medium, program, and display d...
- Publication number 20060256035
- Publication date Nov 16, 2006
- SONY CORPORATION
- Tetsujiro Kondo
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Information supply apparatus, information utilization apparatus, in...
- Publication number 20010014971
- Publication date Aug 16, 2001
- Toshimichi Nagashima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE