| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9b91d376549eafa7d473d97d1882f855 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T436-255
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-18 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N31-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N1-405
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01L3-5082 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N33-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N31-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N1-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01L3-14 |
| filingDate |
1989-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1990-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_55fa61aaea2e6891bdea99bbbb0ac097 |
| publicationDate |
1990-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4920057-A |
| titleOfInvention |
Method for colorimetric analysis of metals |
| abstract |
A portable test kit for colorimetric analysis of trace levels of dithizone-complexing metal cations including lead, is provided. The test kit includes storage tubes each of which contains the reagents and apparatus required for a single test, and has sufficient volumetric capacity to serve as a vessel for the formation and extraction of colored, metal cation-dithizonate complex. Use of the test kit involves a novel and unique sampling technique for capturing a portion of a colored liquid within a container for viewing of the color. Also provided is an improved method for analyzing for trace levels of such metal cations. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007190637-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5427953-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8765480-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6551837-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2013059391-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108760984-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9873925-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9696261-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2002131897-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6344359-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5571643-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8702838-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009098022-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5733786-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2165265-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108760984-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004197229-A1 |
| priorityDate |
1989-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |