| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b09f893b262cefd50c5e76c4b85d1c0a |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-89
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-90
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D315-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-89
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-90
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-88
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D315-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D305-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-88
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| filingDate |
1990-01-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1991-03-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9e904aed76271a98ead2d793bda980fb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c358ef310c7e3a7c48bb6362815d07f8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b97ac98d8843fc5c1f784431af2504e9 |
| publicationDate |
1991-03-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4999438-A |
| titleOfInvention |
Process for the reduction of the polymer portion in the dimerization of ketene |
| abstract |
The polymer portion in the production of diketene by the dimerization of ketene obtained from acetic acid by pyrolysis is reduced by the addition of sulfur dioxide to the ketene gas or to the reaction medium. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5370774-A |
| priorityDate |
1989-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |