Glasses with improved ion exchangeability
US-12570570-B2 · Mar 10, 2026 · US
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Drawing tubes, cylinders, or rods from the melt
Drawing tubes, cylinders, or rods from the melt · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C03B15/14 |
| Official title | Drawing tubes, cylinders, or rods from the melt |
| Display label | Drawing tubes, cylinders, or rods from the melt |
| Total patents | 21 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2018 | 2 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 4 |
| 2025 | 1 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hollow-core optical fibers and methods for producing the same
US-2026049020-A1 · Feb 19, 2026 · US
Hollow-core optical fibers and methods for producing the same
US-2026049019-A1 · Feb 19, 2026 · US
Illumination system having light guides with diffuser elements that emit radially
US-12189184-B2 · Jan 7, 2025 · US
Glass tube
US-2024279101-A1 · Aug 22, 2024 · US
Inlay, sleeve shaft with inlay and refractory tube with sleeve shaft
US-12043562-B2 · Jul 23, 2024 · US
Glass tube
US-11981593-B2 · May 14, 2024 · US
Inlay, sleeve shaft with inlay and refractory tube with sleeve shaft
US-2024043307-A1 · Feb 8, 2024 · US
Inlay, sleeve shaft with inlay and refractory tube with sleeve shaft
US-11820692-B2 · Nov 21, 2023 · US
Method for manufacturing an optical fibre and optical fiber thereof
US-2023064814-A1 · Mar 2, 2023 · US
Method for producing hollow porous quartz glass base material
US-11401192-B2 · Aug 2, 2022 · US
Inlay, sleeve shaft with inlay and refractory tube with sleeve shaft
US-2021371320-A1 · Dec 2, 2021 · US
Glass tube
US-2021347670-A1 · Nov 11, 2021 · US
Illumination system having light guides with diffuser elements that emit radially
US-2021318494-A1 · Oct 14, 2021 · US
Method for producing hollow porous quartz glass base material
US-2020270162-A1 · Aug 27, 2020 · US
Device and process for producing a glass product and glass product
US-2020239350-A1 · Jul 30, 2020 · US
Chemically temperable, corrosion-stable glasses
US-2020010353-A1 · Jan 9, 2020 · US
Glasses with improved ion exchangeability
US-2020010355-A1 · Jan 9, 2020 · US
Borosilicate glass for pharmaceutical container, glass tube for pharmaceutical container, and manufacturing method for pharmaceutical container
US-2018257975-A1 · Sep 13, 2018 · US
Method for producing a component, particularly for use in a crucible pulling method for quartz glass
US-9938635-B2 · Apr 10, 2018 · US