Method of transdermal drug delivery

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4834978
SERIAL NO

07153147

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A transdermal drug delivery system useful for the controlled, for example, zero order, release of one or more drugs to a selected skin area of a user, which system comprises a reservoir containing a transdermal delivery composition. The reservoir contains a composition which comprises a base material, which is a solid but which melts or liquefies upon contact with the skin of a user and selected to occlude the skin of the user to force hydration of the stratum corneum with water from the lower layers of the epidermis of the user and a plurality of solid microparticles, generally uniformly dispersed and suspended in the base material, the microparticles containing an effective, therapeutic amount of the drug for transdermal delivery, such as the contraceptive steroid. In use, the base material forms a thermodynamically stable thin film layer in intimate contact with the skin while the drug is released from the microparticles into the base material and transdermally into the user through the thin liquid film of the base material.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
BIOTEKWOBURN, MA0

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nuwayser, Elie S Wellesley, MA 14 800

Cited Art Landscape

Patent Info (Count) # Cites Year
 
BIOTEK (1)
* 4624665 Method of transdermal drug delivery 202 1984
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
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* Cited By Examiner