| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d6660167441edb2ac3d2d8445b278307
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3ecd4c36df558c926344f5dc0494bec7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0dccd05eda7e1549996e7c93dc4fd261 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C39-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-685
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-14 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-14 |
| filingDate |
2007-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2013-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_358eb3490f3fff546f671d9e058d38ae
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e57aaac293953fc74cb830a14cdeec30 |
| publicationDate |
2013-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-8404085-B2 |
| titleOfInvention |
Separation and purification of hydroquinone from crude mixtures thereof |
| abstract |
Separation and purification of hydroquinone from crude mixtures thereof essentially containing hydroquinone in combination with very small amounts of impurities including resorcinol and pyrogallol, include a topping distillation allowing the resorcinol to be removed as the distillation top product, and allowing a crude mixture essentially containing hydroquinone and the heavy impurities to be recovered at the column bottom, such mixture then being subjected to a bottoming distillation which allows the pyrogallol to be removed at the column bottom and allows hydroquinone in a purified form to be recovered at the column top. |
| priorityDate |
2006-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |