Preparation of carbon-doped silicon dioxide granulate as an intermediate in the preparation of quartz glass
US-2018370835-A1 · Dec 27, 2018 · US
containing chlorine
containing chlorine · 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 | C03C2201/11 |
| Official title | containing chlorine |
| Display label | containing chlorine |
| Total patents | 129 |
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 | 3 |
| 2016 | 16 |
| 2017 | 27 |
| 2018 | 14 |
| 2019 | 23 |
| 2020 | 11 |
| 2021 | 10 |
| 2022 | 11 |
| 2023 | 4 |
| 2024 | 7 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ammonia treatment of silicon dioxide powder in the preparation of quartz glass
US-2018370838-A1 · Dec 27, 2018 · US
Optical fiber
US-2018362392-A1 · Dec 20, 2018 · US
Low loss optical fibers with fluorine and chlorine codoped core regions
US-10150695-B2 · Dec 11, 2018 · US
Coupled multi-core optical fiber
US-2018299613-A1 · Oct 18, 2018 · US
Optical fiber with low loss and nanoscale structurally homogeneous core
US-2018251397-A1 · Sep 6, 2018 · US
Coupled multi-core optical fiber
US-10031283-B2 · Jul 24, 2018 · US
Optical fiber
US-10031282-B2 · Jul 24, 2018 · US
Glass composite for use in extreme ultra violet lithography
US-2018105452-A1 · Apr 19, 2018 · US
Optical fiber with low loss and nanoscale structurally homogeneous core
US-9919955-B2 · Mar 20, 2018 · US
Fused quartz tubing for pharmaceutical packaging
US-9919948-B2 · Mar 20, 2018 · US
OPTICAL COMPONENT MADE OF QUARTZ GLASS FOR USE IN ArF EXCIMER LASER LITHOGRAPHY AND METHOD FOR PRODUCING THE COMPONENT
US-2018057391-A1 · Mar 1, 2018 · US
Optical fiber with reducing hydrogen sensitivity
US-9878943-B2 · Jan 30, 2018 · US
Low loss optical fibers with fluorine and chlorine codoped core regions
US-2018002221-A1 · Jan 4, 2018 · US
Optical fiber
US-2017371096-A1 · Dec 28, 2017 · US
Optical fiber with large effective area and low bending loss
US-9851499-B2 · Dec 26, 2017 · US
Optical component made of quartz glass for use in ArF excimer laser lithography and method for producing the component
US-9834468-B2 · Dec 5, 2017 · US
Optical fiber
US-9817184-B2 · Nov 14, 2017 · US
Low loss optical fibers with fluorine and chlorine codoped core regions
US-9802858-B2 · Oct 31, 2017 · US
Optical fiber preform, optical fiber, and method of manufacturing optical fiber
US-2017285259-A1 · Oct 5, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C03C2201/11?
- CPC C03C2201/11 is the Cooperative Patent Classification code for “containing chlorine.”
- How many patents are filed under CPC C03C2201/11 (containing chlorine)?
- Our database includes 129 publications tagged with this CPC code.
- Is patent activity under CPC C03C2201/11 growing?
- Publication counts under this code: 7 in 2024 vs 2 in 2025 (latest complete years).