Last Updated: September 24, 2026

Details for Patent: 3,965,143

Name: Drug Patent Intelligence for US Patent 3965143
Creator: DrugPatentWatch
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Summary for Patent: 3,965,143

Title:	16-Oxygenated prostanoic acid derivatives
Abstract:	16-Oxygenated prostanoic acid derivatives, displaying valuable pharmacological properties, e.g. gastric anti-secretory, are produced by reaction of an (optionally 3-oxygenated)-5-oxocyclopent-1-enealkanoic/alkenoic acid or ester with the appropriate organometallic reagent.
Inventor(s):	Paul W. Collins, Raphael Pappo
Assignee:	GD Searle LLC
Application Number:	US05/454,913
Patent Claim Types: see list of patent claims	Compound;

Drugs Protected by US Patent 3,965,143

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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 3,965,143

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Argentina	207355	⤷ Start Trial
Austria	351684	⤷ Start Trial
Austria	A227375	⤷ Start Trial
Australia	7947175	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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