Tatsuya Nagatsu

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Patents Grantslast 30 patents

Information Patent Grant
Antenna apparatus and portable apparatus using the same
- Patent number 6,970,140
- Issue date Nov 29, 2005
- Matsushita Electric Industrial Co., Ltd.
- Yasuhiro Hibino
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing linear-circular polarizer
- Patent number 5,937,509
- Issue date Aug 17, 1999
- Matsushita Electric Industrial Co., Ltd.
- Katsuhiko Tokuda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Orthogonal polarized wave branching filter and its manufacturing me...
- Patent number 5,760,660
- Issue date Jun 2, 1998
- Matsushita Electric Industrial Co., Ltd.
- Tatsuya Nagatsu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Linear-circular polarizer having tapered polarization structures
- Patent number 5,724,050
- Issue date Mar 3, 1998
- Matsushita Electric Industrial Co., Ltd.
- Katsuhiko Tokuda
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Antenna apparatus and portable apparatus using the same
- Publication number 20040080466
- Publication date Apr 29, 2004
- Yasuhiro Hibino
- H01 - BASIC ELECTRIC ELEMENTS