| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B17-88
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23F11-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23F11-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F28F19-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B17-88 |
| filingDate |
1977-05-12^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1979-04-10^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d4092c76e7e5e0db526b5c8e3ed0b443
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0e8ac90f5208f75b04ab30c1ff25a1e4 |
| publicationDate |
1979-04-10^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4148858-A |
| titleOfInvention |
Process for the protection against corrosion of cast iron boilers |
| abstract |
Gray cast iron can be protected against corrosion by the vapors of boiling concentrated sulfuric acid when a compound containing positive nitrogen, e.g., nitrogen oxide, is introduced into the gas space between the cast iron to be protected and the boiling sulfuric acid. |
| priorityDate |
1976-05-15^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |