US Patent

US8747902 — Modified release formulations containing drug-ion exchange resin complexes

Formulation · Assigned to Tris Pharma Inc · Expires 2027-03-15 · 1y remaining

Vulnerability score 60/100 Moderate — design-around opportunities exist

What this patent protects

This patent protects a method of making a liquid suspension containing a coated complex of amphetamine and an ion-exchange resin.

USPTO Abstract

An aqueous liquid suspension containing a coated drug-ion exchange resin complex comprising a core composed of an amphetamine complexed with a pharmaceutically acceptable ion-exchange resin and an uncoated amphetamine-ion exchange resin complex is provided. The coated amphetamine-ion exchange resin complex is in admixture with a polymer to form a matrix. Methods of making the coated complex and the liquid suspension are described.

Drugs covered by this patent

Patent Metadata

Patent number
US8747902
Jurisdiction
US
Classification
Formulation
Expires
2027-03-15
Drug substance claim
No
Drug product claim
Yes
Assignee
Tris Pharma Inc
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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