| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5d9f3ca41550d315642580237250c5b0 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B23-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-48546
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B23-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B57-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-485 |
| filingDate |
1981-04-01^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1983-02-08^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f2a28024a3177edb0df700d687038084
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2670ea632d6fbb6ae658f0cfc08bff3e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23ea6db9ac7fb5abe7aa3c81d5dace6b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8767fabc014810ed527fa18d4c912ee0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1d4ed79883537fea2309e98ee0b4ffe5 |
| publicationDate |
1983-02-08^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-1140792-A |
| titleOfInvention |
Photographic emulsions containing a dihydrospiropyran bis-condensation product of a salicyclicaldehyde and at least one hetero cyclic ammonium salt |
| abstract |
PHOTOGRAPHIC EMULSIONS AND ELEMENTS CAPABLE OF FORMING DIRECT-POSITIVE IMAGES Abstract of the Disclosure Silver halide emulsions are disclosed containing silver halide grains capable of forming an internal latent image. Incorporated in the emulsions as a nucleating agent is a dihydrospiropyran bis-condensation product of salicylic aldehyde and at least one heterocyclic ammonium salt, thereby permitting a direct-positive image to be formed on imagewise exposure and photographic processing. |
| priorityDate |
1980-11-17^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |