About: http://webisa.webdatacommons.org/417667248

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In a preferred embodiment of the present invention, carbon (B) is selected from graphite, graphene, activated carbon and especially carbon black.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com