Hiroyuki Ishiwata

Follow

Person

Fukushima-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Diplexer
- Patent number 7,496,332
- Issue date Feb 24, 2009
- Alps Electric Co., Ltd.
- Hiroyuki Ishiwata
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Low-pass filter capable of preventing unnecessary electromagnetic c...
- Patent number 7,423,500
- Issue date Sep 9, 2008
- Alps Electric Co., Ltd.
- Hiroyuki Ishiwata
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Low-pass filter capable of preventing unnecessary electromagnetic c...
- Publication number 20070103256
- Publication date May 10, 2007
- Alps Electric Co., Ltd.
- Hiroyuki Ishiwata
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Composite capacitor
- Publication number 20060091443
- Publication date May 4, 2006
- Alps Electric Co., Ltd.
- Kazuhiko Ueda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Diplexer
- Publication number 20050192047
- Publication date Sep 1, 2005
- Hiroyuki Ishiwata
- H03 - BASIC ELECTRONIC CIRCUITRY