Manufacturing method of glass base material for optical fiber
US-12565442-B2 · Mar 3, 2026 · US
doped with boron or fluorine or other refractive index decreasing dopant
doped with boron or fluorine or other refractive index decreasing dopant · 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 | C03B2201/08 |
| Official title | doped with boron or fluorine or other refractive index decreasing dopant |
| Display label | doped with boron or fluorine or other refractive index decreasing dopant |
| Total patents | 44 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 5 |
| 2017 | 10 |
| 2018 | 5 |
| 2019 | 7 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Microstructured optical fiber and preform for same having specific oxygen deficiency center and chlorine concentrations
US-12560755-B2 · Feb 24, 2026 · US
Fiber-based angular homogenizer
US-12481167-B2 · Nov 25, 2025 · US
Hollow core optical fiber, hollow core optical fiber preform, and method of making the same
US-2025271612-A1 · Aug 28, 2025 · US
Optical fiber
US-2024248252-A1 · Jul 25, 2024 · US
Manufacturing method of glass base material for optical fiber
US-2024140853-A1 · May 2, 2024 · US
Microstructured optical fiber and preform for same
US-2024069272-A1 · Feb 29, 2024 · US
Fiber-based angular homogenizer
US-2023359051-A1 · Nov 9, 2023 · US
High chlorine content low attenuation optical fiber
US-11237321-B2 · Feb 1, 2022 · US
Optical fibers having a varying clad index and methods of forming same
US-11125937-B2 · Sep 21, 2021 · US
Halogen-doped silica for optical fiber preforms
US-10947149-B2 · Mar 16, 2021 · US
Polarization maintaining optical fiber
US-10838140-B2 · Nov 17, 2020 · US
High chlorine content low attenuation optical fiber
US-2019369325-A1 · Dec 5, 2019 · US
High chlorine content low attenuation optical fiber
US-10429579-B2 · Oct 1, 2019 · US
Optical fiber preform production method and optical fiber production method
US-2019169064-A1 · Jun 6, 2019 · US
Halogen-doped silica for optical fiber preforms
US-2019127264-A1 · May 2, 2019 · US
Optical fiber with low loss and nanoscale structurally homogeneous core
US-10259742-B2 · Apr 16, 2019 · US
Optical fiber rod, optical fiber, image fiber, and method for manufacturing optical fiber rod
US-10215916-B2 · Feb 26, 2019 · US
Optical fibers having a varying clad index and methods of forming same
US-2019004245-A1 · Jan 3, 2019 · US
Optical fibers having a varying clad index and methods of forming same
US-10146008-B2 · Dec 4, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C03B2201/08?
- CPC C03B2201/08 is the Cooperative Patent Classification code for “doped with boron or fluorine or other refractive index decreasing dopant.”
- How many patents are filed under CPC C03B2201/08 (doped with boron or fluorine or other refractive index decreasing dopant)?
- Our database includes 44 publications tagged with this CPC code.
- Is patent activity under CPC C03B2201/08 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).