Patent 7700743 was granted and assigned to Millipore (company) on April, 2010 by the United States Patent and Trademark Office.
A chromatography media such as silica controlled pore glass or agarose containing an affinity ligand such as 2-Aminobenzimidazole (ABI) or aminomethylbenzimidazole (AMBI). The ligand is present in density of from about 30 to about 80 μmole/ml.