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US 2009/0269378 A1Published application
Use of tannins in filters
AssigneeBASF SE
InventorsStephan Hueffer, Oliver Reese, Guenter Scherr, Sebastien Garnier
Life of this patent
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Abstract
The present invention relates to the use of a tanning agent in or on filters, in particular natural or synthetic fibrous fabric or foams, for the avoidance of infections, these filters in particular being part of respiratory protection masks or respiratory protection apparatuses.
Claims19
A method of avoiding infections by applying to or introducing one or more synthetic tanning agents into a filter.
A filter comprising at least one tanning agent.
Dependencies are inferred from the claim text.