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US Patent 11434368 Ammunition cartridge containing a polymer composition

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Is a

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Patent attributes

Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Christopher D. McGrady0

Xinyu Zhao0

Yuehua Yu0

Date of Patent

September 6, 2022

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Patent Application Number

171918430

Date Filed

March 4, 2021

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Patent Citations

US Patent 10948273 Multi-piece polymer ammunition, cartridge and components

US Patent 10358556 Blow molded thermoplastic composition

US Patent 10501626 Dynamically vulcanized polyarylene sulfide composition

US Patent 10450461 Crosslinkable polyarylene sulfide composition

US Patent 10590273 Polyarylene sulfide composition

US Patent 10704871 Multi-piece polymer ammunition cartridge

US Patent 11215430 One piece polymer ammunition cartridge having a primer insert and methods of making the same

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Patent Primary Examiner

Jonathan C Weber

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CPC Code

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An ammunition cartridge comprising a casing body that defines a hollow interior configured to receive a projectile is provided. The casing body contains a polymer composition that includes a polyarylene sulfide and an impact modifier. The impact modifier includes an epoxy-functionalized polymer. Further, the polymer composition exhibits a notched Charpy impact strength of about 6 kJ/m

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