	US 12,420,260 B2
	Carbon nanotube sheet for air or water purification
David Gailus, Merrick, NH (US)
Assigned to Nanocomp Technologies Inc., The Woodlands, TX (US)
Appl. No. 17/801,305
Filed by Nanocomp Technologies, Inc., The Woodlands, TX (US)
PCT Filed Mar. 1, 2021, PCT No. PCT/US2021/020264 § 371(c)(1), (2) Date Aug. 22, 2022, PCT Pub. No. WO2021/178300, PCT Pub. Date Sep. 10, 2021.
Claims priority of provisional application 62/983,795, filed on Mar. 2, 2020.
Prior Publication US 2023/0086059 A1, Mar. 23, 2023
Int. Cl. B32B 9/00 (2006.01); B01D 46/00 (2022.01); B01D 53/04 (2006.01); B01J 20/20 (2006.01); B01J 20/28 (2006.01); C01B 32/158 (2017.01); C02F 1/28 (2023.01); B60H 3/06 (2006.01); B82Y 30/00 (2011.01)

CPC B01J 20/205 (2013.01) [B01D 46/0036 (2013.01); B01D 53/0438 (2013.01); B01J 20/28007 (2013.01); B01J 20/28011 (2013.01); B01J 20/28038 (2013.01); B01J 20/28061 (2013.01); C01B 32/158 (2017.08); C02F 1/283 (2013.01); B01D 2253/102 (2013.01); B01D 2253/304 (2013.01); B01D 2253/306 (2013.01); B01D 2253/34 (2013.01); B01D 2259/40096 (2013.01); B01D 2279/40 (2013.01); B01D 2279/50 (2013.01); B60H 3/0658 (2013.01); B82Y 30/00 (2013.01); C01B 2202/32 (2013.01); C01B 2202/34 (2013.01); C01B 2202/36 (2013.01); C01P 2004/54 (2013.01); C01P 2006/10 (2013.01); C02F 2303/16 (2013.01)]

5 Claims

1. A filter for removing contaminants from a liquid or gaseous medium comprising a nonwoven sheet of entangled carbon nanotubes having a length of between 1-10 mm, wherein the entangled carbon nanotubes are further characterized as having two or more of the following characteristics: (i) a diameter of between about 2-20 nm, (ii) a density of between about 0.7-1.9 g/cm³, (iii) an aspect ratio of at least about 250,000, (iv) a strain to failure of between about 1.8-7%, and (v) a surface area from about 100-300 m²/g and wherein the nonwoven sheet further comprises an input configured for receiving energy from a power source.