http://rdf.ncbi.nlm.nih.gov/pubchem/patent/SU-1651141-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6f1e7394260975c686908a182ea04dd4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_64fa58a5ebc1c12f12933c40945f41ee http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a9defaf804eb7a1fd6cc61f0ee94dcd3 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N1-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N1-44 |
| filingDate | 1989-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1991-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0f24df92a5a07e5d74bbb3f254ccdadd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a71dd4eb8ec659fb73daf35b697f667d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_06d274ac8c031feff46defdc5c030bb8 |
| publicationDate | 1991-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | SU-1651141-A1 |
| titleOfInvention | Method of preparing petroleum and petroleum products for determination of nitrogen by spectral analysis |
| abstract | This invention relates to analytical chemistry and can be used in assessing the quality of petroleum products. The purpose of the invention is to expand the scope of application of the method. The method consists in mixing a sample of an oil product with sulfuric acid in a 1: 1 ratio, injecting copper oxide in an amount of 1-2.5% by weight of the sample, heating the mixture to form a sulfopolymer and calcining at a temperature of 75-850 & ° C for 5-10 min. 1 tab. |
| priorityDate | 1989-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 22.