| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3b74e149091c89a4825ef0db8d431755 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L22-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L22-26 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-67011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J37-32706
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J37-32715
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-67069
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-76898
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J37-321
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-3065 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L21-768
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L21-3065
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J37-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L21-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L21-67 |
| filingDate |
2015-04-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2017-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8bb1f796b8123230e9f26ba491045f06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4c103842ce7e2b53d8fd0ccf783911dd |
| publicationDate |
2017-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-9842772-B2 |
| titleOfInvention |
Method of etching |
| abstract |
A method is for etching a semiconductor substrate to reveal one or more features buried in the substrate. The method includes performing a first etch step using a plasma in which a bias power is applied to the substrate to produce an electrical bias, performing a second etch step without a bias power or with a bias power which is lower than the bias power applied during the first etch step, and alternately repeating the first and second etch steps. |
| priorityDate |
2014-04-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |