Last Updated: September 29, 2026

Details for Patent: 4,963,344

Name: Drug Patent Intelligence for US Patent 4963344
Creator: DrugPatentWatch
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Summary for Patent: 4,963,344

Title:	Method to enhance NMR imaging using chelated paramagnetic ions
Abstract:	Agents useful for influencing the relaxation times in NMR diagnostics, contain at least one paramagnetic, physiologically compatible complex salt comprising a chelate from an open-chain or cyclic complex-forming compound containing organic nitrogen, phosphorus, oxygen and/or sulfur, and a complexed ion of the lanthanide elements of atomic number 57-70 or of the transition metals of atomic numbers 21-29, 42 and 44, and, optionally, an inorganic or organic base or acid.
Inventor(s):	Heinz Gries, Douwe Rosenberg, Hanns-Joachim Weinmann, Ulrich Speck, Wolfgang Mutzel, Georg-Alexander Hayden, Heinrich Pfeiffer
Assignee:	Bayer Pharma AG
Application Number:	US07/370,139
Patent Claim Types: see list of patent claims	Use; Composition;

Drugs Protected by US Patent 4,963,344

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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: 4,963,344

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
Germany	3129906	Jul 24, 1981
Germany	3302410	Jan 21, 1983
Germany	3401057	Jan 11, 1984

International Family Members for US Patent 4,963,344

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
European Patent Office	0071564	⤷ Start Trial	SPC/GB93/060	United Kingdom	⤷ Start Trial
Austria	18719	⤷ Start Trial
Austria	397465	⤷ Start Trial
Austria	52247	⤷ Start Trial
Austria	A19184	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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