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Jiro Nakazono
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Tokorozawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Molded foam resin, process for forming the same and speaker diaphra...
Patent number
6,742,622
Issue date
Jun 1, 2004
Pioneer Corporation
Masatoshi Sato
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Loudspeaker
Patent number
6,597,798
Issue date
Jul 22, 2003
Pioneer Electronics Corporation
Jiro Nakazono
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Molded foam resin, process for forming the same and speaker diaphra...
Patent number
6,334,504
Issue date
Jan 1, 2002
Pioneer Corporation
Masatoshi Sato
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Methods for making a loudspeaker vibrating diaphragm
Patent number
6,030,561
Issue date
Feb 29, 2000
Pioneer Electronics Corporation
Masatoshi Sato
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Loudspeaker vibrating diaphragm and methods for its production
Patent number
5,793,002
Issue date
Aug 11, 1998
Pioneer Electronic Corporation
Masatoshi Sato
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Loudspeaker driver unit
Patent number
4,143,738
Issue date
Mar 13, 1979
Pioneer Electronic Corporation
Jiro Nakazono
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
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Patent Application
Molded foam resin, process for forming the same and speaker diaphra...
Publication number
20020027040
Publication date
Mar 7, 2002
PIONEER CORPORATION
Masatoshi Sato
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL