http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3920667-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_08e5126e16ad1c7aae67ba760e92e943 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C8-48 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C8-48 |
| filingDate | 1973-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1975-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5fda5753a3bc20049093ec55a32c5b0f |
| publicationDate | 1975-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-3920667-A |
| titleOfInvention | 3,3-DI-(Substituted azaphenanthen-8-yl)phthalides and naphthalides |
| abstract | This invention relates to a class of phthalein indicator dyes useful as optical filter agents in photographic processes to protect a selectively exposed photosensitive material from further exposure during processing in the presence of indicident light. Such dyes comprise 3,3-disubstituted phthalides and 3,3disubstituted naphthalides wherein the 3,3 substituents are parahydroxy polycyclic aryl radicals possessing a nitrogen atom included in the ring system adjacent to the para-hydroxy group. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4168378-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4275121-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2012180327-A |
| priorityDate | 1971-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 57.