http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-932184-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8012cf439e69b82ac7b83e2552f8c61e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03C23-007 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03C23-00 |
| filingDate | 1960-03-14^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1963-07-24^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-932184-A |
| titleOfInvention | Improvements relating to the manufacture of quartz crystals |
| abstract | A method of manufacturing quartz crystals having an absorption coefficient not exceeding 0,4 in the wavelength range between 2,000 and 35,000 comprises selecting smoky quartz crystals exhibiting at a wavelength of 4,500 an absorption of from 5-40% per cm. thickness and a coefficient of absorption between 0,05 and 0,5 and subsequently thermally bleaching the crystals at a temperature which exceeds 300 DEG C. In examples thermal bleaching is effected at 500 DEG C. for 20 hours. |
| priorityDate | 1959-03-17^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID457707758 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID24261 |
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