Last Updated: June 9, 2026

Details for Patent: 3,812,147

Name: Drug Patent Intelligence for US Patent 3812147
Creator: DrugPatentWatch
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Summary for Patent: 3,812,147

Title:	Acylxylidide local anaesthetics
Abstract:	THE 2-ALKYL-2-ALKYLAMINO - 2'',6'' - ACETOXYLIDIDE COMPOUNDS ARE USEFUL AS LONG LASTING LOCAL ANAESTHETICS.
Inventor(s):	H Adams, G Kronberg, B Takman
Assignee:	Astra USA Inc
Application Number:	US00164022A
Patent Claim Types: see list of patent claims

Drugs Protected by US Patent 3,812,147

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>Approval Date	>TE	>Type	>RLD	>RS	>Patent No.	>Patent Expiration	>Product	>Substance	>Delist Req.	>Patented / Exclusive Use	>Submissiondate

International Family Members for US Patent 3,812,147

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Argentina	193840	⤷ Start Trial
Austria	319205	⤷ Start Trial
Australia	3709971	⤷ Start Trial
Australia	468489	⤷ Start Trial
Belgium	776656	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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