Back to results
US 2001/0039882 A1Published application
Vehicle cabin air filter, a vehicle including a such a filter, and a method of manufacture
AssigneeFiltrauto
InventorPhilippe Brun
Life of this patent
Estimating the term…
Abstract
A vehicle cabin air filter whose filter material carries microcapsules containing at least one volatile substance, the microcapsules being suitable for diffusing said volatile substance progressively into the air passing through the filter.
Claims10
A vehicle cabin air filter comprising a filter material adapted to retain particles in suspension in the air, wherein the filter material carries microcapsules which contain at least one volatile substance and which are adapted to diffuse said volatile substance progressively into the air passing through the filter, wherein the microcapsules are of a diameter lying in the range 0.5 μm to 20 μm;
- and wherein the microcapsules are of a size that is smaller than the maximum size of the pores of the filter material.
Dependencies are inferred from the claim text.