Patent · US Expired

Block copolymer

US6669953B1 · kind B1 · utility

24Cited by
10References
68Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMay 8, 2000
Grant dateDec 30, 2003
Priority date—
Expiry dateMay 8, 2020

Classification

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

Abstract

Cross-linked block copolymers are disclosed which have drug retention properties, comprising hard and soft segments, with cross-linking between the soft segments. The block copolymers can be based upon (meth)acrylic monomers, and some possess adhesive properties.

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