Porous materials for solid phase extraction and chromatography and processes for… Application US-8197692-B2 United States of America 12 Jun 2012
Ion exchange porous resins for solid phase extraction and chromatography Grant US-7790038-B2 United States of America 07 Sep 2010
Porous materials for solid phase extraction and chromatography and processes for… Grant US-7731844-B2 United States of America 08 Jun 2010
Packing material for solid phase extraction and solid phase extraction method Application EP-1159995-A3 European Patent Office 16 Jan 2002