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Last Updated: November 20, 2019

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Details for Patent: 6,446,627

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Summary for Patent: 6,446,627
Title: Inhaler dose counter
Abstract:A dose counter for a metered dose inhaler comprises actuator means (341), drive means (350) for driving a rotary gear (360) in step-wise fashion in response to displacement of said actuator means (341), said rotary gear (360) comprising a wheel having a plurality of ratchet teeth (not shown) around its periphery. Means (364) are provided to prevent reverse rotation of the rotary gear (360). A flexible tape (368) is provided with a visible array of incrementing integers on its surface indicating the number of medicament doses remaining in the inhaler. The tape (368) indexes by a single integer in response to each step of the step-wise rotary motion of the rotary gear (360). A control surface (371) regulates the position of engagement and disengagement between the drive means (350) and the rotary gear (360). In an alternative embodiment (FIG. 6), the control surface (371) is omitted and the means for preventing reverse rotation comprise a stepless restraint (664).
Inventor(s): Bowman; Nicholas John (Royston, GB), Holroyd; Michael John (Great Shelford, GB), Panayi; Costaninos (Royston, GB), Treneman; William Richard (Oakington, GB)
Assignee: Norton Healthcare Limited (London, GB)
Application Number:09/319,947
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 6,446,627
Patent Claim Types:
see list of patent claims
Use; Delivery;

Drugs Protected by US Patent 6,446,627

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: 6,446,627

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom9626538Dec 20, 1996
PCT Information
PCT FiledDecember 18, 1997PCT Application Number:PCT/GB97/03480
PCT Publication Date:July 02, 1998PCT Publication Number: WO98/28033

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