US Patent 7550129 - Faceted graphene nanofibers
http://www.freepatentsonline.com/7550129.html
This patent from Catalytic Materials teaches manufacturing a variation of carbon nanotubes in which the nanotube walls are faceted instead of cylindrical. Claim 1 reads:
1. A crystalline graphitic nanofiber consisting essentially of at least one uninterrupted, unbroken, substantially graphite sheet that is aligned substantially parallel to the longitudinal axis of the nanofiber and which has a substantially non-cylindrical multifaceted tubular structure, wherein when two or more of said sheets is present they are present as a tube within a tube structure and wherein the distance between graphite sheets is from about 0.335 nm to about 0.67 nm, wherein said substantially crystalline graphitic nanofiber has a crystallinity greater than about 95%.
This patent from Catalytic Materials teaches manufacturing a variation of carbon nanotubes in which the nanotube walls are faceted instead of cylindrical. Claim 1 reads:
1. A crystalline graphitic nanofiber consisting essentially of at least one uninterrupted, unbroken, substantially graphite sheet that is aligned substantially parallel to the longitudinal axis of the nanofiber and which has a substantially non-cylindrical multifaceted tubular structure, wherein when two or more of said sheets is present they are present as a tube within a tube structure and wherein the distance between graphite sheets is from about 0.335 nm to about 0.67 nm, wherein said substantially crystalline graphitic nanofiber has a crystallinity greater than about 95%.
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