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Hiroyuki Nakamatsu
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Kyoto-shi, JP
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last 30 patents
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Patent Grant
In-band-flat-group-delay type dielectric filter and linearized ampl...
Patent number
6,995,636
Issue date
Feb 7, 2006
Matsushita Electric Industrial Co., Ltd.
Takehiko Yamakawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
In-band-flat-group-delay type dielectric filter and linearized ampl...
Patent number
6,794,959
Issue date
Sep 21, 2004
Matsushita Electric Industrial Co., Ltd.
Takehiko Yamakawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
In-band-flat-group-delay type dielectric filter and linearized ampl...
Patent number
6,515,559
Issue date
Feb 4, 2003
Matsushita Electric Industrial Co., Ltd.
Takehiko Yamakawa
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
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Patent Application
In-band-flat-group-delay type dielectric filter and linearized ampl...
Publication number
20040145432
Publication date
Jul 29, 2004
Matsushita Electric Industrial Co., Ltd.
Takehiko Yamakawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
In-band-flat-group-delay type dielectric filter and linearized ampl...
Publication number
20030052751
Publication date
Mar 20, 2003
Matsushita Electric Industrial Co., Ltd.
Takehiko Yamakawa
H01 - BASIC ELECTRIC ELEMENTS