Method and device for the production of fullerenes
Patent 5587141 Issued on December 24, 1996. Estimated Expiration Date: 
February 13, 2015. 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.
February 13, 2015. 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 ReferencesElectric arc process for making fullerenes Process for making fullerenes by the laser evaporation of carbon Process and apparatus for producing and separating fullerenes Production of fullerenes by electron beam evaporation Preparation of fullerenes and apparatus therefor Process for the synthesis of fullerenes Patent #: 5395496 InventorsAssigneeApplicationNo. 387253 filed on 02/13/1995US Classes:423/445B, Fullerene (e.g., C60, C70, etc.)204/173, Carbon422/186.21, Arc or spark discharge means422/186.22, With electrode or reaction space heating or cooling means422/186.28, With current control means423/460, Treating carbon423/461Recovery or purificationExaminersPrimary: Bhat, NinaAttorney, Agent or FirmInternational ClassesC01B 031/02B01J 019/08 Foreign Application Priority Data1994-02-25 JPAbstractSoot containing fullerenes is produced by impressing a DC voltage between a carbonaceous anode and a cathode in an airtight chamber maintained in an inert gas atmosphere to cause arc discharge to occur. After termination of the impression of the DC voltage, an inert gas is blown into the chamber to fluidize the soot. The fluidized soot is discharged from the chamber and is brought into contact with a solvent to recover the fullerenes. |
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