http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1446406-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5a5712a0c86172ac79a67ce2ab1da696 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D493-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-04 |
| filingDate | 2002-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_405032f2262ea2b719371ec266edbc87 |
| publicationDate | 2004-08-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1446406-A2 |
| titleOfInvention | Photochromic naphthopyrans for ophthalmic articles |
| abstract | A photochronic naphthopyran displays good color distribution when the naphthopyran has a central nucleus of the formula (I), wherein F is a 5-member, 6-member, or 7-member heterocyclic ring group having only one heteroatom, the heteroatom selected from the group consisting of oxygen, sulfur, and nitrogen, the 2,3 or 3,2 positions of the heterocyclic ring fused to the g, h or i side; R1 and R2 are the atoms or groups providing photochromic properties to the naphthopyran. |
| priorityDate | 2001-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 204.