Last Updated: November 8, 2026

Details for Patent: 6,641,800

Name: Drug Patent Intelligence for US Patent 6641800
Creator: DrugPatentWatch
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Summary for Patent: 6,641,800

Title:	Pressurized aerosol compositions comprising powdered medicament dispersed in hydrofluoroalkane
Abstract:	Pressurized aerosol composition for administration by inhalation comprising a liquefied hydrofluoroalkane, a powdered medicament dispersed therein, and a suspending agent comprising a polymer soluble in the liquefied hydrofluoroalkane which is selected from polymers including recurring amide containing structural units, copolymers of amide containing units and carboxylic acid ester units, polyvinylacetate and acrylic acid/methacrylic acid ester copolymers.
Inventor(s):	Suresh N Mistry, Mark Gibson
Assignee:	Fisons Ltd
Application Number:	US09/616,069
Patent Claim Types: see list of patent claims	Composition; Compound; Process; Device;

Drugs Protected by US Patent 6,641,800

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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: 6,641,800

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
United Kingdom	9120396	Sep 25, 1991
United Kingdom	9120675	Sep 28, 1991
United Kingdom	9124661	Nov 19, 1991
United Kingdom	9203212	Feb 14, 1992

International Family Members for US Patent 6,641,800

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	132739	⤷ Start Trial
Australia	2647192	⤷ Start Trial
Australia	654397	⤷ Start Trial
Bulgaria	61752	⤷ Start Trial
Bulgaria	98681	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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