About: http://webisa.webdatacommons.org/66080674

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	The substratum may be non-porous or porous and may be comprised of many types of materials that are well known in the art such as polymers, metals, and ceramics.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com