Minnesota Mining and Manufacturing Company - St. Paul MN
International Classification:
A61K 950 A61K 938 G01N 3316
US Classification:
252 6253
Abstract:
Magnetically responsive composite microparticles comprising (i) a magnetically responsive material and (ii) a porous solid water-insoluble matrix selected from proteinaceous materials, polysaccharides and mixtures thereof; wherein said magnetically responsive material is dispersed throughout said permeable, solid, water-insoluble matrix.