http://rdf.ncbi.nlm.nih.gov/pubchem/patent/BR-PI1002451-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_46a93d2a7392c5139e5736ed26f29dcb |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B2203-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B2203-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P40-57 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B37-01815 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B37-0183 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B37-01876 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03B37-018 |
| filingDate | 2010-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aa6113f62cff7c5a4d7af61ad069796a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_32fd7c0251ac7db9d20683975e36f2f1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_768231f865c10183a06c0c19cddc1a41 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_14d7487f62c95e9b75dc27ec8b37de84 |
| publicationDate | 2019-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | BR-PI1002451-B1 |
| titleOfInvention | method for manufacturing a primary preform for optical fibers |
| abstract | method for the manufacture of a primary preform for optical fibers. The present invention relates to a method for manufacturing a primary optical fiber preform using an internal vapor deposition process, comprising the steps of: i) providing a hollow glass substrate tube having a supply side and a discharge side, (ii) surround at least part of the hollow glass substrate tube by an oven at a temperature t0, (iii) provide doped or undoped glass forming gases within the hollow glass substrate tube. via its supply side iv) create a reaction zone with conditions such that the deposition of glass on the inner surface of the hollow glass substrate tube will occur, and v) move the reaction zone back and forth along the length hollow glass substrate tube between a reversal point located near the supply side and a reversal point located near the discharge side of the hollow substrate tube to form at least one layer of preform on the inner surface of the hollow glass substrate tube, which preform layer comprises several layers of glass. |
| priorityDate | 2009-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.