Encased tamper resistant controlled release dosage forms

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9522118
APP PUB NO 20160158158A1
SERIAL NO

15045962

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In certain embodiments, the present invention is directed to a solid controlled release dosage form comprising: a core comprising a first portion of an opioid analgesic dispersed in a first matrix material; and a shell encasing the core and comprising a second portion of the opioid analgesic dispersed in a second matrix material; wherein the amount of opioid analgesic released from the dosage form is proportional within 20% to elapsed time from 8 to 24 hours, as measured by an in-vitro dissolution in a USP Apparatus 1 (basket) at 100 rpm in 900 ml simulated gastric fluid without enzymes (SGF) at 37 C.

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Patent Owner(s)

  • PURDUE PHARMA L.P.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Huang, Haiyong Hugh Princeton, US 28 180

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