Details for Patent: 6,681,768

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Which drugs does patent 6,681,768 protect, and when does it expire?

Patent 6,681,768 protects DUAKLIR PRESSAIR and TUDORZA PRESSAIR and is included in two NDAs.

Summary for Patent: 6,681,768

Title:	Powder formulation disintegrating system and method for dry powder inhalers
Abstract:	A disperser for dry powders which can be used with different dose systems, dose weights ranging from 2 to 25 mg and different types of powder formulation. In one embodiment, the disperser acts both as a de-agglomeration (disintegration; aerosolization) means and as an air classifier for especially adhesive mixtures. Only fine drug particles are emitted whereas the larger agglomerates and carrier crystals are retained by the disperser. Another embodiment enables time controlled release of carrier crystals in these mixtures. Yet another embodiment has optimized performance with spherical pellets, containing no carrier crystals. Other possible embodiments of the invention make it possible to control the total inhaler resistance and the powder deposition in the upper respiratory tract by means of the addition of a so-called sheath flow of clean air. Modifications also enable carrier retainment in the mouthpiece and elimination of the tangential flow component of the discharge cloud.
Inventor(s):	Haaije de Boer; Anne (Drachten, NL), Frijlink; Henderik Willem (Eelde, NL), Gjaltema; Doetie (Oosterwolde, NL), Goede; Joachim (Hanau, DE), Hagedoorn; Paul (Assen, NL)
Assignee:	Sofotec GmbH & Co. KG (Frankfurt am Main, DE)
Application Number:	10/177,433
Patent Claim Types: see list of patent claims	Delivery;

Drugs Protected by US Patent 6,681,768

Glossary

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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
Covis	DUAKLIR PRESSAIR	aclidinium bromide; formoterol fumarate	POWDER, METERED;INHALATION	210595-001	Mar 29, 2019		RX	Yes	Yes	See Plans and Pricing	See Plans and Pricing	Y				See Plans and Pricing
Covis	TUDORZA PRESSAIR	aclidinium bromide	POWDER, METERED;INHALATION	202450-001	Jul 23, 2012		RX	Yes	Yes	See Plans and Pricing	See Plans and Pricing	Y				See Plans and Pricing
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>Approval Date	>TE	>Type	>RLD	>RS	>Patent No.	>Patent Expiration	>Product	>Substance	>Delist Req.	>Patented / Exclusive Use	>Submissiondate

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