System including oxygen separation device
US-10458373-B2 · Oct 29, 2019 · US
Chemistry & Metallurgy · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01B13/0251 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 109 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 12 |
| 2017 | 14 |
| 2018 | 13 |
| 2019 | 13 |
| 2020 | 22 |
| 2021 | 8 |
| 2022 | 7 |
| 2023 | 4 |
| 2024 | 2 |
| 2025 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-10458373-B2 · Oct 29, 2019 · US
US-2019135627-A1 · May 9, 2019 · US
US-10280877-B2 · May 7, 2019 · US
US-2019107083-A1 · Apr 11, 2019 · US
US-10256490-B2 · Apr 9, 2019 · US
US-10202946-B2 · Feb 12, 2019 · US
US-10189709-B2 · Jan 29, 2019 · US
US-10180253-B2 · Jan 15, 2019 · US
US-2018370796-A1 · Dec 27, 2018 · US
US-2018334957-A1 · Nov 22, 2018 · US
US-10118823-B2 · Nov 6, 2018 · US
US-2018229210-A1 · Aug 16, 2018 · US
US-2018229209-A1 · Aug 16, 2018 · US
US-10005664-B2 · Jun 26, 2018 · US
US-2018149354-A1 · May 31, 2018 · US
US-2018142361-A1 · May 24, 2018 · US
US-9968906-B2 · May 15, 2018 · US
US-9938145-B2 · Apr 10, 2018 · US
US-9909756-B2 · Mar 6, 2018 · US
US-9901866-B2 · Feb 27, 2018 · US
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