| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5202091df9de019fc995f2d266f9ecc2 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K2201-0355
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K2203-0723
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K3-244 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D5-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K3-384 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05K3-24 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D5-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05K3-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D7-06 |
| filingDate |
1991-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_130788a13c13f304f24a5168b2ec0933
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a517cfea36ff5c4fe31a0bd1b379b532 |
| publicationDate |
1992-01-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2086512-A1 |
| titleOfInvention |
Rinsing of copper foil after anti-tarnish treatment |
| abstract |
The present invention relates to a technique for improving the tarnish and oxidation resistance of copper and copper based alloy materials. A chromium-zinc coating is electrolytically applied to copper or copper based alloy surface using a caustic electrolyte solution (16). The coated material is then rinsed in an aqueous solution (32) containing a phosphate salt of alkali metals or alkaine earth metals, or a borate salt of alkali metals or alkaline earth metals. The pH of the rinse solution is maintained from about 5 to about 12 and preferably from about 7 to about 10. |
| priorityDate |
1990-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |