| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4c10e1e222f10a69411e659d01c18b83
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1ea043773a38dfb853980d948306b63d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c79309ca503caf6b163aa072457369c7 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C2222-10 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-47
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C2-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-17
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C18-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C30-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C28-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-00 |
| filingDate |
2008-04-04^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2012-12-25^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b5a1b3a07e09126184e688e2618f83f9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d04f8e5a9a0a1efd235ef204d8fb2c5d |
| publicationDate |
2012-12-25^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-8337641-B2 |
| titleOfInvention |
Treatment solution for forming black hexavalent chromium-free chemical conversion coating film on zinc or zinc alloy |
| abstract |
Disclosed is a treatment solution for use in the formation of a black trivalent chromium chemical conversion coating film with uniformly stabilized black wash, luster and corrosive resistance irrespective of the type of the acidic, neutral or alkaline zinc plating bath employed or the presence or absence of nickel eutectoid. Also disclosed is a method of forming the black trivalent chromium chemical conversion coating film. The treatment solution comprises a trivalent chromium ion, a chelating agent capable of forming a water-soluble complex with the trivalent chromium, at least one metal ion selected from the group consisting of a cobalt ion, a nickel ion and an iron ion, and formic acid or a salt thereof as a buffer for hydrogen ion concentration. The treatment solution can be used for forming a black hexavalent chromium-free chemical conversion coating film on zinc or a zinc alloy. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9249509-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2015096461-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9534301-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2013202800-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10260151-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9228088-B2 |
| priorityDate |
2005-10-07^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |