US Patent 7840022 Speaker device
Patent 7840022 was granted and assigned to Panasonic on November, 2010 by the United States Patent and Trademark Office.
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Patent abstract
A speaker device includes a cabinet, a speaker unit, a port, a cartridge, and an adsorbent material. The adsorbent material is disposed in the interior of the cartridge. The cartridge is a container removable from the cabinet. When the adsorbent material is deteriorated, the cartridge is replaced or the adsorbent material is reactivated, thereby making it possible to maintain, over a long period of time, the effect of physical adsorption provided by the adsorbent material.
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Patent Inventor Names
Mitsukazu Kuze0
Sawako Kano0
Shuji Saiki0
Toshiyuki Matsumura0
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Official Website
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US Patent 07840022 Speaker device US Patent 7840022 Speaker device
Infobox
Patent Number
078400220
Patent Number
78400220
Edits on 30 Mar, 2023
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
078400220
Date of Patent
November 23, 2010
0Patent Application Number
125533190
Date Filed
September 3, 2009
0Official Website
Patent Primary Examiner
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US Patent 07840022 Speaker device
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07840022
Date of patent
November 23, 2010
Patent application number
12553319
Date Filed
September 3, 2009
Patent primary examiner
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