Methods of controlling steam pressure to produce titania-silica glass
US-2025353776-A1 · Nov 20, 2025 · US
doped with hydroxyl groups
doped with hydroxyl groups · 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 | C03B2201/23 |
| Official title | doped with hydroxyl groups |
| Display label | doped with hydroxyl groups |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 10 |
| 2017 | 7 |
| 2018 | 3 |
| 2019 | 11 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Titanium-containing quartz glass having excellent UV absorption, and method for producing same
US-12286374-B2 · Apr 29, 2025 · US
Titania-silica glass with uniform hydroxyl concentration
US-2024246850-A1 · Jul 25, 2024 · US
Homogenous silica-titania glass
US-2024069429-A1 · Feb 29, 2024 · US
Synthetic quartz glass substrate and making method
US-11851364-B2 · Dec 26, 2023 · US
Method for manufacturing optical fiber parent material, and method for manufacturing optical fiber
US-11667559-B2 · Jun 6, 2023 · US
Preparation of quartz glass bodies with dew point monitoring in the melting oven
US-11492282-B2 · Nov 8, 2022 · US
Diffuser material of synthetically produced quartz glass and method for the manufacture of a molded body consisting fully or in part thereof
US-11390556-B2 · Jul 19, 2022 · US
Titanium-containing quartz glass having excellent uv absorption, and method for producing same
US-2022204387-A1 · Jun 30, 2022 · US
Preparation of a quartz glass body in a melting crucible of refractory metal
US-11299417-B2 · Apr 12, 2022 · US
Preparation of an opaque quartz glass body
US-11236002-B2 · Feb 1, 2022 · US
Spray granulation of silicon dioxide in the preparation of quartz glass
US-11053152-B2 · Jul 6, 2021 · US
Method to reduce darkening in phosphor in glass (PIG) made by SPS
US-11046607-B2 · Jun 29, 2021 · US
Method to Reduce Darkening in Phosphor in Glass (PIG) Made by SPS
US-2020247704-A1 · Aug 6, 2020 · US
Method for manufacturing optical fiber parent material, and method for manufacturing optical fiber
US-2020247710-A1 · Aug 6, 2020 · US
Mirror blank for EUV lithography without expansion under EUV radiation
US-10732519-B2 · Aug 4, 2020 · US
Preparation of a synthetic quartz glass grain
US-10618833-B2 · Apr 14, 2020 · US
Synthetic quartz glass substrate and making method
US-2019225539-A1 · Jul 25, 2019 · US
Discharge lamp
US-10354856-B2 · Jul 16, 2019 · US
Discharge lamp
US-2019172698-A1 · Jun 6, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C03B2201/23?
- CPC C03B2201/23 is the Cooperative Patent Classification code for “doped with hydroxyl groups.”
- How many patents are filed under CPC C03B2201/23 (doped with hydroxyl groups)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC C03B2201/23 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).