Method for making nanotubes and nanoparticles
Patent 6063243 Issued on May 16, 2000. Estimated Expiration Date: 
November 25, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 25, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesCubic boron nitride preparation utilizing nitrogen gas Methods and apparati for producing fullerenes Patent #: 5876684 InventorsAssigneeApplicationNo. 978437 filed on 11/25/1997US Classes:204/164, Electrostatic field or electrical discharge204/173, Carbon204/178Arc or spark dischargeExaminersPrimary: Mayekar, KishorAttorney, Agent or FirmInternational ClassB01J 019/08AbstractThe present invention is an apparatus and method for producing nano-scale tubes and particles. The apparatus comprises novel electrodes for use in arc discharge techniques. The electrodes have interior conduits for delivery and withdrawal of material from the arc region where product is formed. In one embodiment, the anode is optionally made from more than one material and is termed a compound anode. The materials used in the compound anode assist in the reaction that forms product in the arc region of the apparatus. The materials assist either by providing reaction ingredients, catalyst, or affecting the reaction kinetics. Among other uses, the inventive apparatus is used to produce nanotubes and nanoparticles having a variety of electrical and mechanical properties.Other References
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