Treatment liquid and substrate washing method
US-12441965-B2 · Oct 14, 2025 · US
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unsaturated
unsaturated · 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 | C11D7/244 |
| Official title | {unsaturated} |
| Display label | unsaturated |
| Total patents | 7 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2023 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Treatment liquid and substrate washing method
US-2023212485-A1 · Jul 6, 2023 · US
Cleaning liquid composition and method for cleaning polymerization apparatus using same
US-11549084-B2 · Jan 10, 2023 · US
Cleaning composition
US-11053462-B2 · Jul 6, 2021 · US
Cleaning Liquid Composition and Method for Cleaning Polymerization Apparatus Using Same
US-2020362273-A1 · Nov 19, 2020 · US
Process for flushing an oligomerization reactor and oligomerization of an olefin
US-2019322965-A1 · Oct 24, 2019 · US
Cleaning composition
US-2019071622-A1 · Mar 7, 2019 · US