Patent · US Active

Rigid-matrix composition-gradient copolymers which are soluble and/or dispersible in water and in organic solvents

US8431645B2 · kind B2 · utility

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19Claims
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Assignee

Inventors

Key dates

Filing dateSep 18, 2009
Grant dateApr 30, 2013
Priority date—
Expiry dateJan 24, 2030

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08L2666/02
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

The invention relates to composition-gradient copolymers, comprising:

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.