Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7443f9fa412762a1a5ba8390a27fc5e3 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K3-1463 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-3212 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-31053 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-30625 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09G1-02 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L21-321 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09G1-02 |
filingDate |
2018-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_349ebb4be83a1e468ec7c2ae282b71b4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a63c7112ab52583bf3ddfa71d216e233 |
publicationDate |
2020-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
US-2020102475-A1 |
titleOfInvention |
Chemical mecahnical polishing composition and method of polishing silcon dioxide over silicon nitiride |
abstract |
A chemical mechanical polishing composition for polishing silicon dioxide over silicon nitride includes certain acidic heterocyclic nitrogen compounds having a pK value of 5 of less. Also, methods for polishing a substrate to remove some of the silicon dioxide and silicon nitride are disclosed. |
priorityDate |
2018-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |