| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5d9f3ca41550d315642580237250c5b0 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N31-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-526
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-90 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N31-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N31-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N33-84
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N33-90
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N33-52 |
| filingDate |
1987-06-22^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1988-12-06^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2ef4c30ca916f5021fe18b31c43b509d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_78a4cd00b9bbae1ed0a71ed285f2642d |
| publicationDate |
1988-12-06^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4789525-A |
| titleOfInvention |
Analytical method and multilayer element for total ionic iron determination |
| abstract |
A dry multilayer analytical element for determination of total ionic iron is disclosed. The element includes a dye which complexes with Fe +2 . The dye has the structure ##STR1## R 1 represents an electron donating group; or R 1 , together with the carbon to which it is attached, represents sufficient atoms to form a cyclic electron donating group fused to the phenyl group to which R 1 is attached; n R 2 represents an electron withdrawing group; and n R 3 represents H, Cl, F, Br or OR 4 wherein R 4 represents a hydrocarbon having from 1 to 20 carbon atoms. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6812035-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5925318-A |
| priorityDate |
1987-06-22^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |