http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0624245-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_058e0be30e00d53858c67167df60aed5 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-359 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-031 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2021-399 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-39 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-39 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-35 |
| filingDate | 1993-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1998-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1ecd1a6f5cf27221d6e7ec7aead04852 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ca7de2b4a5a14e230b1fd79e659f2344 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9ab6293d7d4df2f5594ebf38d8a4477c |
| publicationDate | 1998-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0624245-B1 |
| titleOfInvention | Diagnostic tests using near infrared laser absorption spectroscopy |
| abstract | RF modulation spectroscopy of a near infrared laser diode source is used to determine the amount of a target substance in a breath sample. In this type of modulation the laser output is modulated to produce sidebands displaced from the laser carrier by the modulation frequency. The modulated beam is passed through a gas sample which differentially absorbs the sidebands, the result of which is the conversion of some of the laser frequency modulation into amplitude modulation which is subsequently detected using a broadband photodetector. In certain tests, the target substance is a particular isotope, whose concentration is measured as an isotope ratio. In order to measure the presence of first and second isotopic species, provision is made to provide laser illumination at characteristic wavelengths for absorption lines for the first and second isotopic species of the gas. This may sometimes be accomplished using a single laser diode and scanning at least one of its operating parameters in order to achieve one of the wavelength difference. Alternatively, first and second laser diodes operating at the first and second wavelengths are used. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-02063309-A1 |
| priorityDate | 1992-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.