Last Updated: November 9, 2026

Details for Patent: 3,476,802

Name: Drug Patent Intelligence for US Patent 3476802
Creator: DrugPatentWatch
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Summary for Patent: 3,476,802

Title:	N-alkyl derivatives of 3,5-diacetamido-2,4,6-triiodobenzoic acid and salts thereof and process for preparing the same
Abstract:
Inventor(s):	Hugo Holtermann, Leif Gunnar Haugen, Nils Thorsdalen, Knut Tjonneland, Knut Wille, Jean Koutroulos
Assignee:	Norgas AS
Application Number:	US74485A
Patent Claim Types: see list of patent claims

Drugs Protected by US Patent 3,476,802

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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 3,476,802

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Brazil	6024559	⤷ Start Trial
Switzerland	398887	⤷ Start Trial
Germany	1192369	⤷ Start Trial
Germany	1518051	⤷ Start Trial
Denmark	125282	⤷ Start Trial
Spain	271951	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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