| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b051f9f7933c758e66f6ceda5c9fb2cc |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-76898 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23F1-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-30608
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K13-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-30604
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23F1-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09G1-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L21-302
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L21-306
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K13-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K13-08 |
| filingDate |
2016-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d42314ec236f12df319ac1c19a0f3a94
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_511a72247fe96f6efb000292617247f3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_65c75182a59fac897a640ab4b31c9181 |
| publicationDate |
2017-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
PH-12016000004-A1 |
| titleOfInvention |
Etchant solutions and method of use thereof |
| abstract |
ABSTRACT OF THE DISCLOSURE Etching compositions and method of using the etching compositions comprising potassium hydroxide; one or more than one additional alkaline compounds selected from the group consisting of TEAH, TMAF and NH40H; and water; or etching compositions comprising one or more than one inorganic alkali basic hydroxides selected from the group consisting of potassium hydroxide, cesium hydroxide, sodium hydroxide, rubidium hydroxide, or lithium hydroxide; optionally one or more than one additional alkaline compounds; water; and optionally one or more corrosion inhibitors; wherein the composition preferentially etches silicon present on a substrate as compared to silicon dioxide present on said substrate. |
| priorityDate |
2014-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |