http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1236384-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c43be753106c0ada1df5b32fb9ea1dfc |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23F1-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23F4-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23F1-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05K3-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23F1-16 |
| filingDate | 1985-01-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1988-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6d23ddb43204db60b960c5c8f4e88403 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fe6c1c8d0c57181f0e2016845cb6f167 |
| publicationDate | 1988-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1236384-A |
| titleOfInvention | Dissolution of metals utilizing tungsten-diol combinations |
| abstract | DISSOLUTION OF METALS UTILIZING TUNGSTEN-DIOL COMBINATIONS ABSTRACT Improved metal dissolution rates are obtained when using a solution containing sulfuric acid, hydrogen peroxide and combina-tions of catalytic amounts of tungsten and of certain diols. The present invention relates to the dissolution of metals in an aqueous bath containing sulfuric acid and hydrogen peroxide, and in particular to a novel bath composition capable of effecting the dissolution at high rates. In one specific aspect the invention is concerned with etching of copper in the production of printed circuit boards. |
| priorityDate | 1984-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 83.