Method and apparatus for disposing hydrogen sulfide
US-2026028250-A1 · Jan 29, 2026 · US
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under vacuum produced by a barometric column
under vacuum produced by a barometric column · 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 | C02F1/046 |
| Official title | {under vacuum produced by a barometric column} |
| Display label | under vacuum produced by a barometric column |
| Total patents | 14 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2019 | 2 |
| 2020 | 5 |
| 2021 | 2 |
| 2023 | 2 |
| 2024 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Optical sensor
US-2024337595-A1 · Oct 10, 2024 · US
Catalyst-free method for degrading dioxane in alkyl ether sulfate vacuum removal water
US-11827544-B2 · Nov 28, 2023 · US
Catalyst-free method for degrading dioxane in alkyl ether sulfate vacuum removal water
US-2023116436-A1 · Apr 13, 2023 · US
Ultrafine bubble generating method, ultrafine bubble generating apparatus, and ultrafine bubble-containing liquid
US-11179652-B2 · Nov 23, 2021 · US
Using waste heat from a data center cooling system to facilitate low-temperature desalination
US-10934178-B2 · Mar 2, 2021 · US
Ultrafine bubble generating method, ultrafine bubble generating apparatus, and ultrafine bubble-containing liquid
US-2020276515-A1 · Sep 3, 2020 · US
Using waste heat from a data center cooling system to facilitate low-temperature desalination
US-2020172411-A1 · Jun 4, 2020 · US
Using waste heat from a data center cooling system to facilitate low-temperature desalination
US-10669164-B2 · Jun 2, 2020 · US
Method and apparatus for the recovery and deep treatment of polluted acid
US-10662075-B2 · May 26, 2020 · US
Low energy fluid purification system
US-10550008-B2 · Feb 4, 2020 · US
Using waste heat from a data center cooling system to facilitate low-temperature desalination
US-2019233305-A1 · Aug 1, 2019 · US
Method and apparatus for the recovery and deep treatment of polluted acid
US-2019023585-A1 · Jan 24, 2019 · US
Low energy fluid purification system
US-2016376168-A1 · Dec 29, 2016 · US