Kiyoshi Ikeda

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Matsusaka-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for manufacturing diaphragm for loudspeaker, diaphragm for l...
- Patent number 7,072,485
- Issue date Jul 4, 2006
- Matsushita Electric Industrial Co., Ltd.
- Hitoshi Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loud speaker, diaphragm and process for making the diaphragm
- Patent number 6,757,404
- Issue date Jun 29, 2004
- Matsushita Electric Industrial Co., Ltd.
- Hiroyuki Takewa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Speaker edge, method of foam-molding the same, apparatus for foam-m...
- Patent number 6,680,430
- Issue date Jan 20, 2004
- Matsushita Electric Industrial Co., Ltd.
- Shinya Tabata
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method for manufacturing diaphragm for loudspeaker
- Patent number 6,627,140
- Issue date Sep 30, 2003
- Matsushita Electric Industrial Co., Ltd.
- Hitoshi Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Method for manufacturing diaphragm for loudspeaker, diaphragm for l...
- Publication number 20040094356
- Publication date May 20, 2004
- Hitoshi Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method for manufacturing diaphragm for loudspeaker, diaphragm for l...
- Publication number 20040094357
- Publication date May 20, 2004
- Hitoshi Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Speaker edge, method of foam-molding the same,apparatus for foam-mo...
- Publication number 20030106740
- Publication date Jun 12, 2003
- Shinya Tabata
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Loud speaker, diaphragm and process for making the diaphragm
- Publication number 20020061117
- Publication date May 23, 2002
- Hiroyuki Takewa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE