<http://webisa.webdatacommons.org/prov/300021314> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/358390866> . <http://webisa.webdatacommons.org/358390866> <http://www.w3.org/ns/prov#wasQuotedFrom> <patents.com> . <http://webisa.webdatacommons.org/358390866> <http://www.w3.org/ns/prov#value> "preferably c is less than about 50; w is an integer greater than about" . <http://webisa.webdatacommons.org/358390866> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> .