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Details for Patent: 6,446,627

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Patent 6,446,627 protects QVAR 40, QVAR 80, PROAIR RESPICLICK, and PROAIR HFA, and is included in three NDAs.

This patent has nine patent family members in nine countries.

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 Claim Types:
see list of patent claims
Use; Delivery;
Patent Metrics:
Source: PatentQuant.com
Field: Medical technology
Back Citations: 15th percentile
Forward Citations: 15th percentile

Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Teva Branded Pharm
QVAR 40
beclomethasone dipropionate
AEROSOL, METERED;INHALATION020911-002Sep 15, 2000RXYes6,446,627► subscribeY
Teva Branded Pharm
QVAR 80
beclomethasone dipropionate
AEROSOL, METERED;INHALATION020911-001Sep 15, 2000RXYes6,446,627► subscribeY
Teva Branded Pharm
PROAIR RESPICLICK
albuterol sulfate
POWDER, METERED;INHALATION205636-001Mar 31, 2015RXYes6,446,627► subscribeY
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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

International Patent Family for Patent: 6,446,627

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria268619► subscribe
Australia5329298► subscribe
Germany69729485► subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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