| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_893465b5a321f5491ad2e2fe60b0240b |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B11-24 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B11-24 |
| filingDate |
1972-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1972-09-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8a10511b58681779e96275782709006a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b1350e35d644b03803093346233f092f |
| publicationDate |
1972-09-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3694461-A |
| titleOfInvention |
Chromogenic compounds |
| abstract |
A chromogenic material of normally colorless form is disclosed having the structural formula: WHEREIN EACH R is hydrogen or an alkyl radical having one to four carbon atoms. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4410708-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3996212-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3970671-A |
| priorityDate |
1972-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |