Isao Ishigaki

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Fukushima-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electromagnetic wave-absorption multilayer substrate
- Patent number 8,043,727
- Issue date Oct 25, 2011
- Alps Electric Co., Ltd.
- Isao Ishigaki
- B32 - LAYERED PRODUCTS
Information Patent Grant
Oscillator for achieving stable oscillation
- Patent number 6,593,822
- Issue date Jul 15, 2003
- Alps Electric Co., Ltd.
- Kazuhiro Nakano
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Resonant line constructed by microstrip line which is easy to be tr...
- Patent number 6,448,874
- Issue date Sep 10, 2002
- Alps Electric Co., Ltd.
- Ikuhiro Shiino
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Oscillator with buffer circuit in which deterioration in C/N ratio...
- Patent number 6,359,521
- Issue date Mar 19, 2002
- Alps Electric Co., Ltd.
- Kazuhiro Nakano
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Resonator for uniformly varying inductance or impedance in longitud...
- Patent number 6,249,196
- Issue date Jun 19, 2001
- Alps Electric Co., Ltd.
- Isao Ishigaki
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
ELECTROMAGNETIC WAVE-ABSORPTION MULTILAYER SUBSTRATE
- Publication number 20080268207
- Publication date Oct 30, 2008
- Alps Electric Co., Ltd.
- Isao ISHIGAKI
- B32 - LAYERED PRODUCTS
Information Patent Application
High frequency circuit module having non-reciprocal circuit element
- Publication number 20060022766
- Publication date Feb 2, 2006
- Alps Electric Co., Ltd.
- Isao Ishigaki
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Non-reciprocal circuit device including multilayer board
- Publication number 20050174187
- Publication date Aug 11, 2005
- Alps Electric Co., Ltd.
- Isao Ishigaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Nonreciprocal circuit element with reduced insertion loss and excel...
- Publication number 20040164816
- Publication date Aug 26, 2004
- Alps Electric Co., Ltd.
- Isao Ishigaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Oscillator for achieving stable oscillation
- Publication number 20020000887
- Publication date Jan 3, 2002
- Alps Electric Co., Ltd.
- Kazuhiro Nakano
- H03 - BASIC ELECTRONIC CIRCUITRY