| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e95a0aaae0fd27e25d9484c59ebcadd9 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2211-1011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2211-1088 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D405-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-73
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K9-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-73
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-78
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K9-02 |
| filingDate |
2007-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8d25b1f3b891e6ccead604adee9bd5fc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_62548c256f52618aca65e0014a411da5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_98c8d49903ab97df48d6f1e580990c4a |
| publicationDate |
2009-11-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-2115533-A1 |
| titleOfInvention |
Photochromic h-annellated benzoýf¨chromenes |
| abstract |
The invention relates to specific photochromic h-annellated benzo[f]chromene derivatives and the use thereof in all types of plastic materials, particularly for ophthalmic purposes. The invention especially relates to photochromic compounds which are derived from benzo[f]chromene, turn less yellow than comparable compounds available in prior art, and have maximum absorptions particularly in the long-wave range in the closed form while being very efficient in the open, colored form so as to be easily compatible with the indenonaphthopyrans widely used in phototropic lenses. |
| priorityDate |
2006-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |