Back to results
US 7,922,796 B2Granted
Chemical and particulate filters containing chemically modified carbon nanotube structures
AssigneeInternational Business Machines Corporation
InventorsSteven J. Holmes, Mark C. Hakey, David V. Horak, James G. Ryan
Life of this patent
Estimating the term…
Abstract
A carbon nanotube filter. The filter including a filter housing; and chemically active carbon nanotubes within the filter housing, the chemically active carbon nanotubes comprising a chemically active layer formed on carbon nanotubes or comprising chemically reactive groups on sidewalls of the carbon nanotubes; and media containing the chemically active carbon nanotubes.
Claims10
A filter, comprising:
- a filter housing having an inlet and a separate outlet;
- a layer of porous walled and closed containers in said filter housing;
- and each porous walled and closed container of said layer holding a tangled collection of individual chemically active carbon nanotubes stuck together in a mat, said chemically active carbon nanotubes comprising a chemically active layer formed on carbon nanotubes or comprising organic chemically reactive groups on sidewalls of said carbon nanotubes.
A filter, comprising:
- a filter housing having an inlet and a separate outlet;
- a porous media in said filter housing;
- a tangled collection of individual chemically active carbon nanotubes stuck together in a mat on a surface of said porous media, said chemically active carbon nanotubes comprising a chemically active layer formed on carbon nanotubes or comprising chemically reactive organic groups on sidewalls of said carbon nanotubes;
- and wherein said porous media is a high efficiency particulate air (HEPA) filter.
1 more element
Dependencies are inferred from the claim text.