Predicate |
Object |
title |
Oxides |
label |
C01G21/02 |
sameAs |
http://data.epo.org/linked-data/def/ipc/C01G21-02 http://www.wipo.int/classifications/ipc/ipcpub/?notion=scheme&symbol=C01G0021020000 |
broader |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G21-00 |