Copolymer-1 improvements in compositions of copolymers

  • US 20050171286A1
  • Filed: 04/05/2005
  • Published: 08/04/2005
  • Est. Priority Date: 05/24/1994
  • Status: Active Grant
First Claim
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1. A copolymer-1 fraction substantially free of species of copolymer-1 having a molecular weight of over 40 kilodaltons.

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