×

Macroporous or microporous filtration membrane, method of preparation and use

  • US 5,993,661 A
  • Filed: 04/14/1997
  • Issued: 11/30/1999
  • Est. Priority Date: 04/14/1997
  • Status: Expired due to Fees
First Claim
Patent Images

1. A membrane selected from the group consisting of a microporous and macroporous membrane, wherein said membrane is composed of a matrix and a set or pores, wherein said matrix consists essentially of chitosan, and wherein said pores are formed by dissolution of a particulate porogen, wherein said pores are uniformly distributed and include a three-dimensional structure.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×