| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_020b389b8e29740f8a5f0317424300b7 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-327
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D455-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D405-14 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D487-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D471-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D455-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B23-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D405-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-327 |
| filingDate |
1992-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_af849c2c6cbab10e1b7192073c5c43f3 |
| publicationDate |
1993-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0550140-A1 |
| titleOfInvention |
Mono(indolylethylenyl)Phthalides |
| abstract |
Novel chromogenic mono(indolylethylenyl)phthalides are of the formulan n wherein A is a moiety of the typen n L is an indole moiety; and n B is a moiety of the typen n The compounds are prepared by condensing indolylethylene with a keto acid or its derivative and an electron acceptor in an organic solvent, and are useful in pressure-sensitive and thermal recording systems, particularly those which can be read by a machine capable of reading in the wavelength range 400 to 900 nm. |
| priorityDate |
1992-01-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |