US Patent 7494638 Form of carbon
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Patent Inventor Names
Donald R. Huffman0
Wolfgang Krätschmer0
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Patent abstract
C60 and C70 carbon atom compounds are prepared by evaporating graphite in an inert quenching gas. The vapor of carbon is collected and is selectively extracted with an organic non-polar solvent.
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US Patent 07494638 Form of carbon US Patent 7494638 Form of carbon
Infobox
Patent Number
074946380
Patent Number
74946380
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Official Website
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Is a
Patent Jurisdiction
Patent Number
074946380
Date of Patent
February 24, 2009
0Patent Application Number
075802460
Date Filed
September 10, 1990
0Official Website
Patent Primary Examiner
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US Patent 07494638 Form of carbon
Infobox
Is a
Patent jurisdiction
Patent number
07494638
Date of patent
February 24, 2009
Patent application number
07580246
Date Filed
September 10, 1990
Patent primary examiner
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