Method for producing glass filament
US-2022356107-A1 · Nov 10, 2022 · US
containing hydroxyl groups
containing 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 | C03C2201/23 |
| Official title | containing hydroxyl groups |
| Display label | containing hydroxyl groups |
| Total patents | 79 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 13 |
| 2017 | 7 |
| 2018 | 10 |
| 2019 | 13 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 10 |
| 2023 | 2 |
| 2024 | 5 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods of forming a foldable apparatus
US-2022106218-A1 · Apr 7, 2022 · US
Fiber optic temperature measurement with quantum dot nanocomposite
US-2021206689-A1 · Jul 8, 2021 · US
Spray granulation of silicon dioxide in the preparation of quartz glass
US-11053152-B2 · Jul 6, 2021 · US
Substrate for a reflective optical element
US-2021116616-A1 · Apr 22, 2021 · US
Preparation of a quartz glass body in a multi-chamber oven
US-2020361806-A1 · Nov 19, 2020 · US
Silica glass for radio-frequency device and radio-frequency device technical field
US-2020255324-A1 · Aug 13, 2020 · US
Preparation of a quartz glass body in a multi-chamber oven
US-10730780-B2 · Aug 4, 2020 · US
Glass fibers and pre-forms made of homogeneous quartz glass
US-10676388-B2 · Jun 9, 2020 · US
Chemically temperable, corrosion-stable glasses
US-2020010353-A1 · Jan 9, 2020 · US
Method for loading a blank composed of fused silica with hydrogen, lens element and projection lens
US-10427965-B2 · Oct 1, 2019 · US
Glass composite for use in extreme ultra violet lithography
US-10427974-B2 · Oct 1, 2019 · US
Method of manufacturing optical fiber preform and optical fiber preform
US-2019270662-A1 · Sep 5, 2019 · US
Gas flushing for melting ovens and process for preparation of quartz glass
US-2019092672-A1 · Mar 28, 2019 · US
Preparation of quartz glass bodies with dew point monitoring in the melting oven
US-2019092675-A1 · Mar 28, 2019 · US
Spray granulation of silicon dioxide in the preparation of quartz glass
US-2019077691-A1 · Mar 14, 2019 · US
Glass fibres and pre-forms made of homogeneous quartz glass
US-2019062198-A1 · Feb 28, 2019 · US
Preparation of quartz glass bodies from silicon dioxide granulate
US-2019062197-A1 · Feb 28, 2019 · US
Preparation of a quartz glass body in a multi-chamber oven
US-2019062193-A1 · Feb 28, 2019 · US
Steam treatment of silicon dioxide powder in the preparation of quartz glass
US-2019062194-A1 · Feb 28, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C03C2201/23?
- CPC C03C2201/23 is the Cooperative Patent Classification code for “containing hydroxyl groups.”
- How many patents are filed under CPC C03C2201/23 (containing hydroxyl groups)?
- Our database includes 79 publications tagged with this CPC code.
- Is patent activity under CPC C03C2201/23 growing?
- Publication counts under this code: 5 in 2024 vs 4 in 2025 (latest complete years).