Selection method and system for target palladium membrane, execution method and system for hydrogen-related reaction, and determination method and system for permeation rate
US-2026021453-A1 · Jan 22, 2026 · US
Preparation from hydrogen and oxygen · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01B15/029 |
| Official title | Preparation from hydrogen and oxygen |
| Display label | Preparation from hydrogen and oxygen |
| Total patents | 38 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 3 |
| 2017 | 7 |
| 2018 | 7 |
| 2019 | 6 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2026021453-A1 · Jan 22, 2026 · US
US-12337304-B2 · Jun 24, 2025 · US
US-2025011169-A1 · Jan 9, 2025 · US
US-11883809-B2 · Jan 30, 2024 · US
US-2023285946-A1 · Sep 14, 2023 · US
US-2022298128-A1 · Sep 22, 2022 · US
US-2022062881-A1 · Mar 3, 2022 · US
US-10987656-B2 · Apr 27, 2021 · US
US-10968123-B2 · Apr 6, 2021 · US
US-10888843-B2 · Jan 12, 2021 · US
US-10821421-B2 · Nov 3, 2020 · US
US-2019366302-A1 · Dec 5, 2019 · US
US-10336613-B2 · Jul 2, 2019 · US
US-2019176133-A1 · Jun 13, 2019 · US
US-2019135664-A1 · May 9, 2019 · US
US-10265682-B2 · Apr 23, 2019 · US
US-2019111415-A1 · Apr 18, 2019 · US
US-10053438-B2 · Aug 21, 2018 · US
US-2018193821-A1 · Jul 12, 2018 · US
US-9919923-B2 · Mar 20, 2018 · US
Answers are generated from the same data shown on this page.