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US 5,395,411 AGranted
Filter for air cleaning
AssigneeToyo Boseki Kabushiki Kaisha
InventorTakahito Kobayashi
Life of this patent
Estimating the term…
Abstract
An air cleaning filter comprising a layer (A) of water-repellent fiber and a layer (B) in which fiber bundles comprising aggregates of water-absorbent fibers are arranged. Layer (B) has an air permeability of not less than 100 cm.sup.3 /cm.sup.2 . s and is located upstream of layer (A).
Claims10
An air cleaning filter comprising:
- a layer (A) of water-repellent fiber and
- a layer (B) in which fiber bundles comprising aggregates of water-absorbent fibers are arranged, said layer (B) having an air permeability of not less than 100 cm.sup.3 /cm.sup.2 . s and said layer (B) being located upstream of said layer (A).
Dependencies are inferred from the claim text.