http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-579832-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_281161ac5ee7218dd027549bb34451e7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5f75c1dde4b24f1914846602b8e5b429 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_61ace237678c029e1b19edbb0df6720f http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a882e92736ca4bc373487cf0bac6ad76 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S501-903 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03C3-068 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03C3-074 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03C3-068 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03C3-074 |
| filingDate | 1943-11-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1946-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-579832-A |
| titleOfInvention | Improvements relating to optical glasses |
| abstract | 579,832. Optical glass. CHANCE BROS, Ltd., BASTICK, R. E., HAMPTON, W. M., and WANG, T-H. Nov. 11, 1943, No. 18792. [Class 56] Optical glass comprises the following essential constituents within the range of proportions specified namely : Silica (Si02) - - - 10-25 per cent Barium Oxide (BaO) - 15-35 " " Boron Oxide (B2O2)- - 10-30 " " Lanthanum oxide (La203) 8-20 " " Thorium oxide (ThO2) -. 3-15 " ." Zinc oxide (ZnO) - - 2- 8 "<SB> " the amounts of lanthanum and thorium oxides together being not more than 35 per cent of the total glass composition. - Five examples are given. Lead oxide and other-alkaline earth oxides may be added provided that the total of the oxides of lead, zinc and the alkaline earth metals does not exceed 45 per cent of the glass composition. Oxides of zirconium, aluminium, and beryllium may be added to prevent crystallisation. |
| priorityDate | 1943-11-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.