Keiji ISHIKAWA

Follow

Person

Mie, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Speaker and manufacturing method thereof
- Patent number 9,674,595
- Issue date Jun 6, 2017
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Masamichi Ara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loudspeaker, electronic device and mobile device both including the...
- Patent number 9,008,350
- Issue date Apr 14, 2015
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Kenichi Ajiki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loudspeaker
- Patent number 7,020,301
- Issue date Mar 28, 2006
- Matsushita Electric Industrial Co., Ltd.
- Satoshi Koura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
SPEAKER AND MANUFACTURING METHOD THEREOF
- Publication number 20160142803
- Publication date May 19, 2016
- Panasonic Intellectual Property Management Co., Ltd.
- Masamichi ARA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LOUDSPEAKER, ELECTRONIC DEVICE AND MOBILE DEVICE BOTH INCLUDING THE...
- Publication number 20140193026
- Publication date Jul 10, 2014
- PANASONIC CORPORATION
- Kenichi Ajiki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Loudspeaker
- Publication number 20040086147
- Publication date May 6, 2004
- Satoshi Koura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE