http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-102249255-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B37-0183 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B37-01869 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B37-01861 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B37-018 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03B37-014 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C16-50 |
| filingDate | 2014-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-102249255-B1 |
| titleOfInvention | A method for manufacturing a precursor for a primary preform for optical fibres by means of a plasma deposition process |
| abstract | The present invention relates to a method of making a precursor. In other words, the present invention relates to a method of manufacturing a precursor for a primary preform for an optical fiber by an internal plasma deposition process, the method comprising: providing a hollow base tube having a supply side and a discharge side; Causing deposition of non-glassy silica layers on at least a portion of the inner surface of the substrate tube at or near an inversion point on the discharge side to provide a substrate tube with non-glassy layers on at least a portion of its inner surface. Creating a first plasma reaction zone having first reaction conditions in the interior of the hollow substrate tube by harmful electromagnetic radiation; And subsequently to electromagnetic radiation to effect deposition of glassy silica layers on the substrate tube having non-glassy layers on at least a portion of the inner surface thereof to obtain a substrate tube on which the non-glassy and glassy silica layers are deposited. Creating a second plasma reaction zone having second reaction conditions in the interior of the hollow substrate tube; And cooling the substrate tube on which the non-glassy and vitreous silica layers are deposited to obtain the precursor for the primary preform. |
| priorityDate | 2013-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.