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Last Updated: April 25, 2024

Details for Patent: 5,438,071

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Summary for Patent: 5,438,071

Title:	Stable porfimer sodium compositions and methods for their manufacture
Abstract:	A storage stable porfimer sodium (polyhematoporphyrin ether/ester) composition useful in the photodynamic therapy of cancer and other conditions is provided. The composition is characterized in that the percentage of ester linked porphyrin oligomers is less than 10% of the composition. Improved processes for preparing such compositions are also provided wherein acetylated hematoporphyrin is treated with alkali for sufficient time and temperature to reduce the amount of porphyrin oligomers joined by ester linkages to less than 10% of the composition.
Inventor(s):	Clauss; Steven L. (Manville, NJ), Pastel; Michael J. (Highland Mills, NY), Zawadzki; Rainer K. (Wuhan, CN)
Assignee:	American Cyanamid Company (Stamford, CT)
Application Number:	08/075,227
Patent Claim Types: see list of patent claims	Composition; Compound; Use;

Drugs Protected by US Patent 5,438,071

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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 5,438,071

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	150968	⤷ Try a Trial
Canada	2094974	⤷ Try a Trial
Germany	69309340	⤷ Try a Trial
Denmark	0568323	⤷ Try a Trial
European Patent Office	0568323	⤷ Try a Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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