US Patent 7335193 Osmotically-driven fluid dispenser
Patent 7335193 was granted and assigned to DURECT on February, 2008 by the United States Patent and Trademark Office.
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Patent abstract
Improvements in a mini-osmotic pump and coating compositions are described. The dispensing pump includes an inner fluid-filled bag encased by an osmotic layer and outer, semi-permeable membrane. The inner bag is formed with an arcuate edge at the open end of the bag to inhibit formation of fissures in the outer membrane in this edge region. The coating compositions include cellulose acetate butyrate, cellulose acetate propionate, and polymethylmethacrylate polymers, optionally mixed with ethyl cellulose in acetone based solvent systems.
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US Patent 07335193 Osmotically-driven fluid dispenser US Patent 7335193 Osmotically-driven fluid dispenser
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Patent Number
0733519300
Patent Number
733519300
Edits on 25 Mar, 2023
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Is a
Current Assignee
Patent Jurisdiction
Patent Number
073351930
Date of Patent
February 26, 2008
0Patent Application Number
108851880
Date Filed
July 6, 2004
0Official Website
Patent Primary Examiner
Edits on 28 Sep, 2022
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
073351930
Date of Patent
February 26, 2008
0Patent Application Number
108851880
Date Filed
July 6, 2004
0Official Website
Patent Primary Examiner
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US Patent 07335193 Osmotically-driven fluid dispenser
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07335193
Date of patent
February 26, 2008
Patent application number
10885188
Date Filed
July 6, 2004
Patent primary examiner
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