Last Updated: September 27, 2026

Details for Patent: 3,454,643

Name: Drug Patent Intelligence for US Patent 3454643
Creator: DrugPatentWatch
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Summary for Patent: 3,454,643

Title:	5 - (tertiaryaminoalkylene)-5 hydroxy- and 5-(tertiary aminoalkylidene) - dibenzocycloheptatrienes,and salts thereof
Abstract:
Inventor(s):	Arthur C Cope, Edward L Engelhardt, Katheryn Keene
Assignee:	Merck and Co Inc
Application Number:	US808943A
Patent Claim Types: see list of patent claims

Drugs Protected by US Patent 3,454,643

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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

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