Kiyotaka Tatekawa

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Kobe, JP

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Patents Grantslast 30 patents

Information Patent Grant
Variable directivity antenna and variable directivity antenna syste...
- Patent number 7,277,063
- Issue date Oct 2, 2007
- DX Antenna Company, Limited
- Toshiaki Shirosaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Signal receiving system
- Patent number 7,084,829
- Issue date Aug 1, 2006
- DX Antenna Company, Limited
- Toshiaki Shirosaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Antenna apparatus
- Patent number 7,071,891
- Issue date Jul 4, 2006
- DX Antenna Company, Limited
- Toshiaki Shirosaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multiple frequency band antenna and signal receiving system using s...
- Patent number 6,965,353
- Issue date Nov 15, 2005
- DX Antenna Company, Limited
- Toshiaki Shirosaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Variable directivity antenna apparatus and receiver system using su...
- Patent number 6,914,558
- Issue date Jul 5, 2005
- DX Antenna Company, Limited
- Toshiaki Shirosaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Antenna system
- Patent number 6,774,863
- Issue date Aug 10, 2004
- DX Antenna Company, Limited
- Toshiaki Shirosaka
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
VARIABLE DIRECTIVITY ANTENNA APARATUS
- Publication number 20090015476
- Publication date Jan 15, 2009
- DX ANTENNA COMPANY, LIMITED
- Eiji Shibuya
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Antenna apparatus
- Publication number 20060044203
- Publication date Mar 2, 2006
- Toshiaki Shirosaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Multiple frequency band antenna and signal receiving system using s...
- Publication number 20050062667
- Publication date Mar 24, 2005
- Toshiaki Shirosaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Signal receiving system
- Publication number 20040196204
- Publication date Oct 7, 2004
- Toshiaki Shirosaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ANTENNA SYSTEM
- Publication number 20040102221
- Publication date May 27, 2004
- Toshiaki Shirosaka
- H01 - BASIC ELECTRIC ELEMENTS