US Patent 7935175 - Magnetic trapping of CNTs

http://www.freepatentsonline.com/7935175.html

In some manufacturing methods filters are used to separate carbon nanotubes from an exhaust gas. However, these filtrers can become clogged which decresases the efficiency of nanotube extraction. This patent from Semes Co. teaches instead using a magnetic means for separation. Claim 1 reads:

1. A carbon nanotube trapping apparatus for trapping carbon nanotubes generated at a reaction tube, comprising:

a housing including an inner space through which an exhaust gas including carbon nanotubes grown on a metal catalyst passes, the housing having an inner circumferential surface of non-magnetized material; and

a magnetic block installed at the housing and configured to trap the carbon nanotubes grown on the metal catalyst on the inner surface of the housing by using a magnetic force.

US Patent 7862765 - Injection molding CNTs

http://www.freepatentsonline.com/7862765.html

Injection molding is a common technique used in forming plastic parts for a variety of industries. This patent from Semes Co. teaches a method of injection molding using carbon nanotubes to form plastic devices which can block electromagnetic waves and disperse static electricity. Claim 1 reads:

1. A method of synthesizing a conductive composite, the method comprising:

injecting pellets, which were created by extruding carbon nanotubes CNTs and polymers, into an injection-molding machine and injection-molding the pellets by using the injection-molding machine; and

applying an electric field to the pellets which are being injection-molded by the injection-molding machine so as to induce the CNTs in a composite into which the pellets are injection-molded to have an isotropic orientation.