Last Updated: September 24, 2026

Details for Patent: 3,726,919

Name: Drug Patent Intelligence for US Patent 3726919
Creator: DrugPatentWatch
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Summary for Patent: 3,726,919

Title:	Benzene derivatives
Abstract:	Benzene derivatives of the formula: D R A W I N GWHEREIN R4 represents, for example, a hydroxy group, or an optionally substituted ureido or thioureido group, which possess similar pharmacodynamic properties. WHEREIN R1 represents alkanoylamino of not more than nine carbon atoms, R2 represents alkyl of one through six carbon atoms, and R3 represents alkyl of one through six carbon atoms or cycloalkyl of three through six carbon atoms, possess pharmacodynamic properties and are useful in the treatment of various cardiac disorders. Moreover, they can be used as starting materials for corresponding compounds in which the ketone group -COR2 is replaced by a grouping
Inventor(s):	Kenneth Robert Harry Wooldridge, B Basil
Assignee:	May and Baker Ltd
Application Number:	US00785403A
Patent Claim Types: see list of patent claims

Drugs Protected by US Patent 3,726,919

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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

Foreign Priority and PCT Information for Patent: 3,726,919

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
United Kingdom	58,516/67	Dec 22, 1967
United Kingdom	56,513/68	May 14, 1968
United Kingdom	37,103/67	Aug 2, 1968

International Family Members for US Patent 3,726,919

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	286262	⤷ Start Trial
Austria	286963	⤷ Start Trial
Austria	289826	⤷ Start Trial
Austria	292671	⤷ Start Trial
Belgium	715205	⤷ Start Trial
Belgium	725845	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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