Coating device having first and second temperature controlled flow paths for coating a glass fiber and coating method
US-12577153-B2 · Mar 17, 2026 · US
Extrusion
Extrusion · 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 | C03C25/18 |
| Official title | Extrusion |
| Display label | Extrusion |
| Total patents | 46 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 3 |
| 2018 | 5 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 7 |
| 2022 | 7 |
| 2023 | 2 |
| 2024 | 6 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Optical fibers with non-circular coating
US-2025314817-A1 · Oct 9, 2025 · US
Process for drying wet glass fibre forming packages
US-12304854-B2 · May 20, 2025 · US
Method for manufacturing optical fiber
US-12291481-B2 · May 6, 2025 · US
Tri-layer ceramic optical fibers and method of making
US-2025060529-A1 · Feb 20, 2025 · US
Method of Cladding Ceramic Optical Fibers
US-2025059099-A1 · Feb 20, 2025 · US
Process for drying wet glass fibre forming packages
US-2024254042-A1 · Aug 1, 2024 · US
Method for manufacturing optical fiber
US-2024199480-A1 · Jun 20, 2024 · US
Method of applying coating liquid to an optical fiber
US-12012358-B2 · Jun 18, 2024 · US
Process for drying wet glass fibre forming packages
US-11981599-B2 · May 14, 2024 · US
Resin coating device
US-2024092690-A1 · Mar 21, 2024 · US
Structure for flaming droplet suppression in optical fiber cables
US-11880079-B2 · Jan 23, 2024 · US
Coated optical fiber and method of making same
US-11655185-B2 · May 23, 2023 · US
Coating device and coating method
US-2023002274-A1 · Jan 5, 2023 · US
Optical fiber coating die with reduced wetted length
US-11524920-B2 · Dec 13, 2022 · US
Optical fiber coating die assembly having inlet tube
US-11518709-B2 · Dec 6, 2022 · US
Optical fiber manufacturing method and optical fiber manufacturing apparatus
US-2022363594-A1 · Nov 17, 2022 · US
Process for drying wet glass fibre forming packages
US-2022340485-A1 · Oct 27, 2022 · US
Optical fiber coating die with reduced wetted length
US-11440839-B2 · Sep 13, 2022 · US
Structure for flaming droplet suppression in optical fiber cables
US-2022214511-A1 · Jul 7, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C03C25/18?
- CPC C03C25/18 is the Cooperative Patent Classification code for “Extrusion.”
- How many patents are filed under CPC C03C25/18 (Extrusion)?
- Our database includes 46 publications tagged with this CPC code.
- Is patent activity under CPC C03C25/18 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).