| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_893465b5a321f5491ad2e2fe60b0240b |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D491-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-89 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B57-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-89
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D491-048
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D491-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B11-26 |
| filingDate |
1975-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1977-04-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8a10511b58681779e96275782709006a |
| publicationDate |
1977-04-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4016174-A |
| titleOfInvention |
Benzoindole phthalides |
| abstract |
A chromogenic compound of normally colorless form is disclosed having the following structural formula: <IMAGE> wherein A can be aminophenyl, indolyl, and benzoindolyl, substituted or not; B can be benzoindolyl, substituted or not; and E can be a broad family of aromatic and heterocyclic structures. The compound is eligible for use in pressure-sensitive record materials and manifold marking systems. Because of light absorption characteristics, selected compounds of this invention are especially useful where broad spectrum absorption and machine readability are important. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5041547-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5039821-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5627287-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5116978-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4996328-A |
| priorityDate |
1975-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |