US Patent 7569238 Antitussive agent and method for making the same
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Patent abstract
An antitussive agent. A composition for relieving, preventing and/or treating cough includes a sufficient amount of Cynanchi Atrati Radix extract as an active component. The effective Cynanchi Atrati Radix extract is prepared by extracting Cynanchi Atrati Radix with water, ethanol, hexane, ethyl acetate or a combination thereof. The crude extract can be further fractioned by ultrafiltration or reverse phase column.
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US Patent 07569238 Antitussive agent and method for making the same US Patent 7569238 Antitussive agent and method for making the same
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Patent Number
0756923800
Patent Number
756923800
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Is a
Patent Jurisdiction
Patent Number
075692380
Date of Patent
August 4, 2009
0Patent Application Number
104239660
Date Filed
April 28, 2003
0Official Website
Patent Primary Examiner
Edits on 23 Sep, 2022
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Infobox
Is a
Patent Jurisdiction
Patent Number
075692380
Date of Patent
August 4, 2009
0Patent Application Number
104239660
Date Filed
April 28, 2003
0Official Website
Patent Primary Examiner
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US Patent 07569238 Antitussive agent and method for making the same
Infobox
Is a
Patent jurisdiction
Patent number
07569238
Date of patent
August 4, 2009
Patent application number
10423966
Date Filed
April 28, 2003
Patent primary examiner
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