| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6694d3fa23df9c75cb591967f90b0b11
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4e9825174ef5e2904fcc8863ea5cf4c8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cec9ddea3e64b3ef2e7a2879d266283f |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K2101-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L2924-0002
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B9-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B25-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K35-262
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B9-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B9-106
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K35-40 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L21-44 |
| filingDate |
2009-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2012-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3a89dc243c526be28c60891dfd7dd031
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e1efd31d22adb8ea8fc66a8aaa7268e8 |
| publicationDate |
2012-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-8138576-B2 |
| titleOfInvention |
Production method and production apparatus of tin or solder alloy for electronic components, and solder alloy |
| abstract |
The invention provides a technique and a device that dramatically improve joint reliability of miniature joints of fine electronic components. According to the invention, when producing a tin or a solder alloy used for electronic components, an ingot of a tin or a solder alloy is heated, melted and delivered to a reactor. Also, a solution containing organic acid having a carboxyl group (—COOH) is delivered to the reactor. After stirring and mixing the two liquids intensively, the mixed liquid is separated into a molten tin or a molten solder alloy liquid and an organic acid solution according to the difference in specific gravity. Then, the respective liquids are circulated to the reactor, and the metal oxides and the impurities existing in the molten tin or the molten solder alloy are removed, and the molten tin or the molten alloy is purified to have oxygen concentration of 5 ppm or less. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2013269984-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9149883-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20210150453-A |
| priorityDate |
2009-02-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |