| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_88f6119845609835b613468307fb4a5a |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B2201-86 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B5-235
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03C3-321
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B17-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B5-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03C1-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03B5-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B17-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03B5-235
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03C1-00 |
| filingDate |
2018-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2021-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1a6bb9352a9dc9db29323e292203cd52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_466cf18bd866535fda5d3a90b8ff8b56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fbe3ea82eb924fab69f384319ebba62b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bc09e3996772a4916c31b90320c92f17
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a9caed6f747307ea8fc42dd0f6e6d289
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f8421284667f36095b21b005cfaa0b31 |
| publicationDate |
2021-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-10974984-B2 |
| titleOfInvention |
Manufacturing process for striae-free multicomponent chalcogenide glasses via convection mixing |
| abstract |
A method for making high optical quality multicomponent chalcogenide glasses without refractive index perturbations due to striae, phase separation or crystal formation using a sealed ampoule with chemical components enclosed inside, a two-zone furnace, a convection heating/mixing step, and multiple fining steps. Initially, the sealed ampoule is oriented vertically within the two-zone furnace and heated to melt the chemical components contained within, and a temperature gradient is created between the top zone and the bottom zone such that the bottom zone has a higher temperature. This temperature gradient causes convection currents within the viscous liquid until it is sufficiently mixed due to the convective flow. Then the temperature gradient is reversed such that the top zone now has a higher temperature and the convective flow ceases. The furnace temperatures are then reduced over a period of time, with holds at multiple temperatures for fining and cooling to form a solid glass. |
| priorityDate |
2017-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |