| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c89cdb408a39eb40fc69d27627685b9e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2030-121
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2030-407
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-468 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-461
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D8-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-40 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-12 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D8-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-00 |
| filingDate |
1989-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1991-02-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_568b3fd52cfc1c75ba76c6321e07b982
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bda3008ceba3eb56d7ad1fa42d4170f1 |
| publicationDate |
1991-02-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4992083-A |
| titleOfInvention |
Apparatus for intermediate enrichment of trace substances from a gas stream in a cold trap, and chromatography arrangement provided therewith |
| abstract |
For intermediate enrichment of trace substances from a gas stream, a cold ap is used which carries a flow and optionally contains an adsorbent material and which is surrounded by a gas-tight double-walled jacket into which cooling fluid from a surrounding cooling bath can penetrate via an extension tube at the bottom. For desorption, the cooling fluid is expelled from the double-walled jacket via compressed air and a valve control. A pipe loop connected to the double-walled jacket and having a heater winding and circulation pump allows rapid heating of the cold trap. A level control apparatus connected to the compressed-air line allows sensitive level adjustment in the bottom extension tube of the double-walled jacket during the desorption phase. Such a cold trap is advantageous, inter alia, in a chromatography arrangement with a separation column and fractionating column of high resolution and sensitivity. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112268970-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112268970-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5152176-A |
| priorityDate |
1988-11-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |