About: http://webisa.webdatacommons.org/450446580

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	Patent must have a monocrystalline structure and is made from material such as Al2O3, Cr2O3 (which is being avoided in the present invention), MgAl2O4 and/or ZrO2.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr