| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3e9445e5e3626f36e932c6451a928250 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S430-16 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D333-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-79
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C5-3021 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-79
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D333-38 |
| filingDate |
1982-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1984-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_78bf5efcf3f5ebf4130910a7c7311e5a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_622055bcbba0e05222c5673911d97a54 |
| publicationDate |
1984-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4426444-A |
| titleOfInvention |
Hydroquinone derivatives and their use in photographic materials |
| abstract |
Compounds of the formula ##STR1## wherein R 1 , R 2 , R 3 and R 4 are hydrogen or alkyl, X represents the atoms to complete an aromatic heterocyclic ring system and Y is hydrogen or the group ##STR2## where X is defined as above, are readily cleaved in alkaline solutions to release a hydroquinone derivative. n The compounds can be incorporated into photographic materials used for activation processing. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9359275-B2 |
| priorityDate |
1980-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |