| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0e77f06144be4708a6ae75bd9fee56a4 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C255-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C59-347 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-185
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-347
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-265
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-245
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-716
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C327-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 |
| filingDate |
1974-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
1978-07-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
IE-38941-B1 |
| titleOfInvention |
Process for the preparation of acetone dicarboxylic acid and derivatives thereof, and of citric acid |
| abstract |
A feasible process for the production of 3-oxoglutaric acid is disclosed wherein ketene and phosgene are reacted in a molar ratio of ketene to phosgene of less than 2 in an organic solvent possessing a dielectric constant at 20 DEG C between 2 and 22 and reacting the resulting product with a Zerewitinoff active hydrogen compound.n[US3963775A] |
| priorityDate |
1973-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |