Agilent Technologies, Inc.

Advanced Technology Materials, Inc.

Timothy J Langlois

Joseph J Kirkland

Ounjie Wang

Andrew Scott Lawing

William E Barber

Alan D Broske

Qunjie Wang

Daniel Brian Messick, Jr

Brian M Wagner

The present invention relates to porous substrate compositions and methods for producing such compositions. In one embodiment, the porous substrate composition of the present invention comprises sintered spherical particles of a substantially uniform size. The porous media compositions of the present invention comprise relatively randomly-ordered particles with a void fraction significantly higher than compositions with a more ordered, close-packed configuration. The present invention further relates to composite porous media compositions comprising two or more relatively discrete layers of sintered particles.

Porous media compositions and methods for producing the same

The invention provides novel compositions, columns and methods for improved chromatographic separations. In particular, novel column packings are provided to improve overall chromatographic separation and efficiency. The invention provides a packing material having particles or mixtures of particles that are used for separation of small molecules, proteins or nucleic acids.

Composition and method for high efficiency chromatography

Highly purified, porous silica microspheres contain functional groups which are capable of selectively binding to reaction impurities, such as excess reactant or reaction by-products, which are contained in a reaction medium. The reaction impurities can thereby be efficiently removed from the reaction medium, providing a convenient method for product purification.

Porous silica microsphere scavengers

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West Chester, PA, United States of America

Timothy J Langlois