| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_aa67eb74ea5b96d9f8f2cfdb3b025770 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-0014 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N27-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J49-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N33-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J49-04 |
| filingDate |
1992-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1994-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_03761bd7628e065f9b960a4ca85adad3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d11ee31b48903b70a75a520c7d9ebf6e |
| publicationDate |
1994-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5304796-A |
| titleOfInvention |
Atmospheric pressure ionization mass spectroscopy method including a silica gel drying step |
| abstract |
The present invention provides a method of analyzing a gas sample for trace impurity concentration by atmospheric pressure ionization mass spectroscopy. In accordance with the present invention, moisture is removed from the gas sample before analysis by passing the gas sample through a dried bed of silica gel. The bed of silica gel is sufficiently dried so that remaining moisture present in the gas sample after passage through the bed is at a sufficiently low concentration such that the trace impurity concentration as analyzed by atmospheric ionization mass spectroscopy will not be effected by the remaining moisture. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8664004-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11241720-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005097051-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-02090960-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006211131-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-02090960-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100809131-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11707770-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7323344-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5475217-A |
| priorityDate |
1992-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |