Hollow core optical fiber, hollow core optical fiber preform, and method of making the same
US-2025271612-A1 · Aug 28, 2025 · US
doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn
doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn · 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 | C03B2201/40 |
| Official title | doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn |
| Display label | doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn |
| Total patents | 51 |
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 | 6 |
| 2016 | 9 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 9 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Glass and method for manufacturing the same
US-12202767-B2 · Jan 21, 2025 · US
Preparation method for tungsten/gadolinium oxide functional fiber having core-shell structure for x and gamma ray protection
US-11987886-B2 · May 21, 2024 · US
Method for producing an optical fibre for a distributed measurement of temperature or deformation in a harsh environment using the Rayleigh backscattered signal
US-11971310-B2 · Apr 30, 2024 · US
Preparation method for tungsten/gadolinium oxide functional fiber having core-shell structure for x and gamma ray protection
US-2024093374-A1 · Mar 21, 2024 · US
Microheater comprising a rare earth-doped optical fiber
US-11880062-B2 · Jan 23, 2024 · US
Glass strand, glass roving, and method for manufacturing same
US-2023406750-A1 · Dec 21, 2023 · US
Glass and method for manufacturing the same
US-2022289618-A1 · Sep 15, 2022 · US
Doped fused silica component for use in a plasma-assisted manufacturing process and method for producing the component
US-2022153626-A1 · May 19, 2022 · US
Method for producing an optical fibre for a distributed measurement of temperature or deformation in a harsh environment using the rayleigh backscattered signal
US-2021262868-A1 · Aug 26, 2021 · US
Forming bodies for forming continuous glass ribbons and glass forming apparatuses comprising the same
US-11053153-B2 · Jul 6, 2021 · US
Ultraviolet-shielding glass sheet and vehicle window pane using the glass sheet
US-10988404-B2 · Apr 27, 2021 · US
Composition and method for producing a molded body from a highly pure, transparent quartz glass by means of additive manufacturing
US-10954155-B2 · Mar 23, 2021 · US
Glass fibers
US-10899652-B2 · Jan 26, 2021 · US
Doped, low-temperature co-fired glass-ceramic (ltcc) insulating substrates, and related wiring boards and methods of manufacture
US-2020385304-A1 · Dec 10, 2020 · US
Doped, low-temperature co-fired glass-ceramic (LTCC) insulating substrates, and related wiring boards and methods of manufacture
US-10858282-B1 · Dec 8, 2020 · US
Optical device and method for manufacturing optical device
US-10830948-B2 · Nov 10, 2020 · US
Optical device and method for manufacturing optical device
US-2020225408-A1 · Jul 16, 2020 · US
Optical fiber with integrated absorber material
US-2020209466-A1 · Jul 2, 2020 · US
Microheater comprising a rare earth-doped optical fiber
US-2020174184-A1 · Jun 4, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C03B2201/40?
- CPC C03B2201/40 is the Cooperative Patent Classification code for “doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn.”
- How many patents are filed under CPC C03B2201/40 (doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn)?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC C03B2201/40 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).