Hydrogen peroxide vapor detoxifying system
US-2019168158-A1 · Jun 6, 2019 · US
Multiple step processes
Multiple step processes · 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 | B01D53/869 |
| Official title | {Multiple step processes} |
| Display label | Multiple step processes |
| Total patents | 142 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 12 |
| 2017 | 22 |
| 2018 | 10 |
| 2019 | 21 |
| 2020 | 17 |
| 2021 | 10 |
| 2022 | 7 |
| 2023 | 9 |
| 2024 | 12 |
| 2025 | 8 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for the removal of oxygen from an industrial gas
US-2019126201-A1 · May 2, 2019 · US
Air pollution control system
US-2019099714-A1 · Apr 4, 2019 · US
Method and apparatus for removing nox and n2o from a gas
US-2018280873-A1 · Oct 4, 2018 · US
Process and Apparatus for Eliminating NOx and N2O
US-2018264408-A1 · Sep 20, 2018 · US
Filter bag assembly
US-10071340-B2 · Sep 11, 2018 · US
Elimination of ammonia and lower alkanes and/or hydrogen from waste gas streams in industrial plants
US-10071341-B2 · Sep 11, 2018 · US
Carbon dioxide recovery method and recovery apparatus
US-2018243680-A1 · Aug 30, 2018 · US
Process and apparatus for eliminating NOX and N2O
US-10022669-B2 · Jul 17, 2018 · US
Flue gas treatment device
US-9925490-B2 · Mar 27, 2018 · US
Measuring apparatus having a device for generating clean air
US-2018078899-A1 · Mar 22, 2018 · US
Apparatus for treating substrate
US-9895645-B2 · Feb 20, 2018 · US
Combustion and flue gas treatment system and SOx removal unit
US-9879857-B2 · Jan 30, 2018 · US
Hydrochloric acid purification process
US-9828314-B2 · Nov 28, 2017 · US
Method for Removing N2O and NOx From the Nitric Acid Production Process, and an Installation Suitable for Same
US-2017334722-A1 · Nov 23, 2017 · US
Gas Purifier
US-2017333841-A1 · Nov 23, 2017 · US
Catalyst for the oxidation of sulfur compounds
US-9776133-B2 · Oct 3, 2017 · US
Process for removing nitrous oxide from a gas stream
US-2017246590-A1 · Aug 31, 2017 · US
Process for removing nitrous oxide from a gas stream
US-2017246589-A1 · Aug 31, 2017 · US
A process for the oxidation of hydrogen sulfide to sulfur trioxide with subsequent sulfur removal and a plant for carrying out the process
US-2017239618-A1 · Aug 24, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D53/869?
- CPC B01D53/869 is the Cooperative Patent Classification code for “Multiple step processes.”
- How many patents are filed under CPC B01D53/869 (Multiple step processes)?
- Our database includes 142 publications tagged with this CPC code.
- Is patent activity under CPC B01D53/869 growing?
- Publication counts under this code: 12 in 2024 vs 8 in 2025 (latest complete years).