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US 4,250,172 AGranted
Needled fiber mat containing granular agent
OwnerArnold B. Mutzenberg, Hans P. Hausheerinventors
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Abstract
At least two layers of fibrous mat have a layer of granular agent therebetween and are mechanically interlocked by means of needling.
Claims20
A mat containing a granular agent for treatment of a liquid or gaseous stream flowing through said mat and thereby coming in contact with the granular agent, said mat comprising:
- at least two layers of fibrous material;
- at least one layer of granular agent located between said layers of fibrous material;
- and,
- wherein said layers of fibrous material are mechanically linked together by needling.
1 more element
Dependencies are inferred from the claim text.