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Details for Patent: 6,748,947

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Patent 6,748,947 protects PROAIR RESPICLICK and is included in one NDA.

This patent has eighty-one patent family members in eighteen countries.

Summary for Patent: 6,748,947

Title: De-agglomerator for breath-actuated dry powder inhaler
Abstract:A de-agglomerator is provided for use with a breath-actuated dry powder inhaler for breaking up aggregates and micronizing particles of dry powder prior to inhalation of the powder by a patient using the inhaler. The de-agglomerator includes an inner wall defining a swirl chamber extending along an axis from a first end to a second end, a dry powder supply port, an inlet port, and an outlet port. The supply port is in the first end of the swirl chamber for providing fluid communication between a dry powder delivery passageway of an inhaler and the first end of the swirl chamber. The inlet port is in the inner wall of the swirl chamber adjacent to the first end of the swirl chamber and provides fluid communication between a region exterior to the de-agglomerator and the swirl chamber. The outlet port provides fluid communication between the second end of the swirl chamber and a region exterior to the de-agglomerator, whereby a breath induced low pressure at the outlet port causes air flows into the swirl chamber through the dry powder supply port and the inlet port. The air flows collide with each other and with the wall of the swirl chamber prior to exiting through the outlet port, such that any powder entrained in the air flows is broken down and micronized. The de-agglomerator further includes vanes at the first end of the swirl chamber for creating additional collisions and impacts of entrained powder.
Inventor(s): Keane; Laurence (Aldwick, GB), O'Leary; David (Essex, GB)
Assignee: Norton Healthcare, Ltd. (London, GB)
Application Number:09/888,281
Patent Claim Types:
see list of patent claims
Delivery; Composition;
Patent Metrics:
Source: PatentQuant.com
Field: Handling
Back Citations: 20th percentile
Forward Citations: 3rd 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
PROAIR RESPICLICK
albuterol sulfate
POWDER, METERED;INHALATION205636-001Mar 31, 2015RXYes6,748,947► subscribeY
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Non-Orange Book Patents for Patent: 6,748,947

For Orange Book-listed patents (shown in the main table above) generic applications must certify that the listed patents are expired, invalid, or will not be infringed by generic entry.

The non-Orange Book patents listed below do not require formal certifications, so they do not automatically impede generic entry. Instead, they represent potential opportunities for branded firms to block generic entry through patent infringment challenges.

Patent No. Title Estimated Patent Expiration
8,006,690Reservoir pressure system for medicament inhaler► subscribe
6,701,917 Dose counter for medicament inhaler► subscribe
6,718,972 Dose metering system for medicament inhaler► subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Because of the complexity of determining patent expiration dates it is advisable to have patent counsel verify freedom to operate.

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International Patent Family for Patent: 6,748,947

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina028746► subscribe
Argentina028747► subscribe
Argentina064449► 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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