Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_20688220cab72ad01902ff5223732946 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-48538 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C5-50 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-485 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-08 |
filingDate |
1989-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_72d63f6d4a2d0719d018df8da7a72a78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a5821a7e55b712ac73f5b236644ea779 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_21b5d43c9f378bb867adaa6d95ab425c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4381efd53fc0893491887bedaec115df |
publicationDate |
1991-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
EP-0416174-A1 |
titleOfInvention |
Method of developing direct positive silver halide material |
abstract |
Method for the production of direct-positive images by image-wise exposing a light-sensitive silver halide material comprising a support and an internal latent image-type silver halide emulsion layer and developing said exposed material in the presence of at least one development nucleator and density-increasing amounts of a compound chosen from the class consisting of formic acid, oxalic acid, glyoxylic acid, or salts of these and/or of a compound chosen from the class consisting of polyethylene glycols, with a hydroquinone-type developing solution having a pH not higher than 12.0 and comprising less than 25 g per liter of a hydroquinone and 5 to 100 g per liter of at least one alkanolamine. |
isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0521198-A1 |
priorityDate |
1989-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |