Last Updated: September 24, 2026

Details for Patent: 5,405,084

Name: Drug Patent Intelligence for US Patent 5405084
Creator: DrugPatentWatch
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Summary for Patent: 5,405,084

Title:	Nozzle assembly for preventing back-flow
Abstract:	A nozzle assembly which comprises a nozzle aperture for discharge of a fluid as a spray of droplets, and a conduit in fluid flow communication with the nozzle aperture. The flow of fluid through the conduit is restricted by the minimum effective cross-sectional area of the conduit transverse to the line of flow of fluid through the conduit so that back flow of fluid from the nozzle aperture through the conduit at ambient and operational pressure differentials is substantially prevented. The invention further provides for a method of discharging a fluid as a spray of droplets, and a spray generating device which includes the nozzle assembly of the present invention.
Inventor(s):	Terence E. Weston, Stephen T. Dunne
Assignee:	Boehringer Ingelheim International GmbH
Application Number:	US08/070,306
Patent Claim Types: see list of patent claims	Use; Device;

Drugs Protected by US Patent 5,405,084

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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: 5,405,084

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
United Kingdom	9026298	Dec 04, 1990
United Kingdom	9109072	Apr 26, 1991

PCT Information
PCT Filed	December 04, 1991	PCT Application Number:	PCT/GB91/02147
PCT Publication Date:	June 25, 1992	PCT Publication Number:	WO92/10306

International Family Members for US Patent 5,405,084

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	134165	⤷ Start Trial
Australia	659618	⤷ Start Trial
Australia	8942391	⤷ Start Trial
Canada	2097700	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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