Substrate cleaning method and substrate cleaning apparatus
US-2025256308-A1 · Aug 14, 2025 · US
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Hydrogen
Hydrogen · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01F23/23764 |
| Official title | {Hydrogen} |
| Display label | Hydrogen |
| Total patents | 15 |
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 | 2 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 3 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydrogen water generator and hydrogen gas generating system with warning function
US-2024366905-A1 · Nov 7, 2024 · US
Substrate cleaning method and substrate cleaning apparatus
US-2023234107-A1 · Jul 27, 2023 · US
Hydrogen water generator
US-11312611-B2 · Apr 26, 2022 · US
Hydrogen water generator
US-2020361759-A1 · Nov 19, 2020 · US
Functional water producing apparatus and functional water producing method
US-2020353431-A1 · Nov 12, 2020 · US
Functional water producing apparatus and functional water producing method
US-10654014-B2 · May 19, 2020 · US
Medical gas-liquid supply system
US-10364503-B2 · Jul 30, 2019 · US
Hydrogen rich water generator
US-10265665-B2 · Apr 23, 2019 · US
Apparatus and a method of generating bubbles and foams
US-9885120-B2 · Feb 6, 2018 · US
Reformate hydrotreatment method
US-9879186-B2 · Jan 30, 2018 · US
Medical gas-liquid supply system
US-2017362723-A1 · Dec 21, 2017 · US
Functional water producing apparatus and functional water producing method
US-2017216800-A1 · Aug 3, 2017 · US
Reformate hydrotreatment method
US-2015247098-A1 · Sep 3, 2015 · US
Apparatus and a method of generating bubbles and foams
US-2015191836-A1 · Jul 9, 2015 · US