| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3da35414c617017e340c348ba3fea279 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B1-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B5-23
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D493-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-92
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B3-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D295-033 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-96
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D295-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D295-033
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-92
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-78
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B1-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D405-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02C7-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B3-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-23
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-72 |
| filingDate |
1987-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1992-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6dd4ae70541e672471f9437bae5bb897
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2df25a3a968d4cab2feb6b9fc7931102
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6184d57e999d712a103e571b93085db7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_318914a9f2a2c4b765d2f2533dadabad
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9dad42ae60a721f1d1e31276efd92025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bb762f25fd49c521b9d26d3c2bdecba7 |
| publicationDate |
1992-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-1306643-C |
| titleOfInvention |
Photoreactive lenses |
| abstract |
ABSTRACT PHOTOREACTIVE LENSES Photoreactive plastics lenses are disclosed which are coated or impregnated with an adamantane 2-spiro-benzo or naphthopyran and with a blue colouring photochromic benzo- or naphthopyran having a nitrogen containing substituent in the 2-position in the pyran ring. The lenses darken in sunlight and fade rapidly at ambient temperatures in the dark or in white light which does not contain a U.V. component. The combination of the yellow/orange colouring adamantane 2-spiro pyran compound with the purple/blue colouring pyran gives a desired brown/grey colouration in the sunlight-darkened lens-. The invention includes novel blue-colouring pyran compounds in which the nitrogen-containing substituent in the 2-position is a phenyl group having an amino or substituted amino or nitrogen-containing heterocyclic substituent in the ortho- or para-position of the phenyl group. |
| priorityDate |
1986-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |